NiScope EX Multi Record vi program

Hi,
I have a question in niScope EX Multi Record.vi program. I was not explaining it well in my previous mail. That is why people can not answer my question. This time, I will explain clear.
Attached "abc" is my prgram with niScope EX Multi Record.vi prgram. This is my question. How come I can not get the waveform when I do the same action in the seond time? Here is how my prgram work. First, I press "reset" push button, the light will go off and press it again the light turn off. The prgram do nothing, just reset the value of the voltmeter and current meter. Second, I press the "enable" button, the voltmeter and current meter get reading since I have a subprgram under timeout in the event structure. Then, I press the "enable button" again to turn on the light. Third, I press the "bark button", my hardware will be shocked and output waveform, since I have a subprogram, niScope EX Multi Record.vi, I set the right parameter, I will get the "shock pulse waveform".
Everything looks good and working. Then I press the "bark" push button again to turn the light off. I want to do the same action the second time to see if the waveform of niScope EX Multi Record will generate again because normally I tried the same action the second time. the waveform will generate again. Here I am talking about I use the niScope EX Multi Record.vi prgram without anything and event structure and I did the same action as what I said in the above procedure. But, I did the same action in the second time in this "abc" vi program with niScope EX Multi Record. vi prgram, I could not get a new waveform, I don't understand why? could you please tell me what I did wrong? my niscope EX Multi Record.vi prgram is out of the event structure, what I see is like this prgram is alone just like the one I tried without event structure before. I am not sure if this single prgram mixed with event structure, it will be what? will it be different like I put two subprgrams in one block diagram even though I tried two subprgram put it together and it will work what it suppose to do. I am not very sure if ni scope EX Multi Record.vi prgram mixed with other prgrams with event struturem, what will happen? Will it be the same like two subprgram put it together? Could you please tell me exactly what if I put niScope EX multi record.vi with event structure including another program, what will happen? I would like to understand.
Attachments:
abc.vi ‏227 KB

Hi Nyborn,
The changes of the graph color are controlled by the Waveform Graph property node on your block diagram. In the niScope EX Multi Record.vi example the Plot.Fill/PtColor value of the waveform graph property node is connected to a random generating number which changes the color on every execution. If you want to assign just one color, remove the random number vi and just wire a acii constant for the color you'd like. You can find listing of all acii color codes here.
I hope this helps.
Regards,
Natasa

Similar Messages

NiScope EX Multi Record.vi

Hi:
I used niScope EX Multi Record.vi program. It will generate a random colour waveform. Sometimes it will generate a dimm colour and sometimes it will genarate the same colour again when the program run again. Is there anyway to make a dim colour to bright and not to repeat the same colour.
I am in a very urgent. I appreicate your quick reponse.
Attachments:
Dimm Color.doc ‏30 KB

Hi Nyborn,
The changes of the graph color are controlled by the Waveform Graph property node on your block diagram. In the niScope EX Multi Record.vi example the Plot.Fill/PtColor value of the waveform graph property node is connected to a random generating number which changes the color on every execution. If you want to assign just one color, remove the random number vi and just wire a acii constant for the color you'd like. You can find listing of all acii color codes here.
I hope this helps.
Regards,
Natasa

NiScope EX Multi Record

Hi:
I have a question on niScope EX Multi Record. I tried to put 10ohm in the BNC cable. See my attached graph. Then, I press the "Bark" button on my test fixture. It will generate the waveform using the niScopeEX Multi Record vi. But, if I use 100ohm in R1 or 18kohm in R1, The program will not generate the waveform after pressing the "bark" button. But, if i press the "test" button on the fixture, no matter I use 10ohm, 100ohm or 18kohm, the niScope EX Multi Record vi will generate the waveform. What wrong with it? Is there anything wrong in the niScopeEX Multi Record vi or is there anything that I can set in this program to solve this problem.
I am also attached the fixture block so that you can see the bark and test push button.
I am in a very urgent. I need your quick reponse. I appreicate your help
Attachments:
NI Scope.doc ‏430 KB
Current%20Measurement.PNG ‏7 KB
Block diagram of the fixture.pdf ‏43 KB

Hi Nyborn,
The changes of the graph color are controlled by the Waveform Graph property node on your block diagram. In the niScope EX Multi Record.vi example the Plot.Fill/PtColor value of the waveform graph property node is connected to a random generating number which changes the color on every execution. If you want to assign just one color, remove the random number vi and just wire a acii constant for the color you'd like. You can find listing of all acii color codes here.
I hope this helps.
Regards,
Natasa

Multi-record continuous acquisition with PCI-5112

Hallo!
I need to know if it is possible to obtayn a continuous acquisition in multi-record mode.
In "niScope EX Multi Record Fetch Forever.vi" shipping example (LV 5.1), it seems to stop when "loop index" rises to "number of records -1" value.
I've not the avilability of the PCI5112 card at the moment, so I cannot to try on, but I need of a confirm.
If I've well understood, I could modify the loop condition, by erasing the check on loop index, and by wiring "loop index"mod(N), to "fetch record number" attribute (let's define N as "number of records"). So I could continuously fetch the records 0,1,..,N-1, for the first cycle, and again 0,..N-1, for the second cycle, and so on.
OK! I think that the contents of a reco
rd number K (with 0<=K<=N-1) are different if acquired in different cycles! In this way I can obtayn a "for ever" multi record acquisition. Is it right?
Thanks for your answers.

NatRob,
It sounds like you are on the right track. The only thing keeping this from running continuously is the comparison of "loop iteration + 1" to the "number of records." Other than that, the loop should only stop when an error occurs or hte Stop button is pressed. Just erase the greater than comparison and the boolean used to stop the loop and it should work.
Regards,
Chris Drymalla
NI Applications Engineer

Writing waveforms from Ch. 0 of niSCOPE to binary file in a multi-record setup?

Hello,
I am not very experienced with niSCOPE and writing waveform records, so I need some expert help here.
Here is my application:
I am generating a pulse train using a 6602 counter/timer. Each rising edge of this pulse train triggers an niFGEN to generate a single sawtooth waveform output to another device and, at the same time, acquiring data from Ch. 0 of an niSCOPE. I am fetching one record per rising edge of the pulse train for the niSCOPE (multi-record setup).
The attached VI is where I am at thus far. All triggering and reading/fetching of the waveforms seems to be working just fine when testing with an oscilloscope. I now need to save each waveform record along with the timestamp of its rising edge trigger to a binary file. The bottom of the VI is where my attempt is at saving the waveforms to a binary file, so the attention should be there when looking at it.
I am running LabVIEW from a computer connected to the NI PXI-Chassis using a cross-over cable.
Questions:
1.) Do I need to convert the data coming in on Ch. 0 of the niSCOPE to digital? Does it come in as analog from an oscilloscope? If I need to do this, how can I accomplish this?
2.) When I try to run an example VI to write a waveform to a binary file by choosing "My Computer" in the bottom left of the VI window, it works it saves the file just fine. When I change this to run on "PXI2", a file is not even created and I get an error on File Dialog (code# 7, I think) each time the file is attempted to be closed. This may be a stupid question, but why can I not save data to a file on my computer if running the VI on "PXI2"?
3.) Assuming the saving of each waveform to a binary file is working (read: (2) is successfully addressed), how can I also write the timestamp of the starting trigger for the waveform along with the waveform in the binary file? An example VI of how I can accomplish this would be fantastic, but I haven't been able to find one thus far.
4.) When I was messing around and trying to accomplish this, it seemed that doing this writing may slow down the entire process too much. I need to record data to the extent of the sawtooth waveform generated by the niFGEN AWG for each trigger. Is there any changes I should make to my acquisition process in the niSCOPE section so that I can read each waveform, along with keeping the timestamp for each, and write this information to a binary file?
I need to get this working quickly, so any help on this is greatly appreciated. Thanks in advance.
Attachments:
5124_update.vi ‏157 KB

Thank you so much for your reply, David. Let me try and explain my
situation and setup a little better, as well as discuss the points you
made in your reply. Beware, you may want to refill your coffee as this
post is long .
I am using an embedded controller in a PXI-1044 chassis. I now have the
chassis hooked up to our local network, and I am deploying my project
to the chassis over the network as I am also connected to the local
network. I have an oscilloscope next to me that takes as input the
pulse train for a trigger and the generated sawtooth from the niFGEN
for each trigger (rising edge of the pulse train from the 6602
counter). Just to make sure synchronization is taking place, the
sawtooth is also fed as input to the niSCOPE for acquisition.
"PXI2" is what shows up when I choose to run a VI on the PXI chassis
rather than "My Computer"; not sure why the 2 is there either, but that
is what it says. I may have tracked down the issue I was having with
writing, but more about that a little later...
The attached VI is an update, although not much has changed. My
application design is like this (keep in mind that some values for VI's
are still constants in the block diagram while others are controls on
the front panel): I am using the 6602 to generate a 1 KHz pulse train
and routing this pulse train to PXI_Trigger0/RTSI0. I am also using the
PXI_Clock (10) as a sample clock for this, and also using this same
clock as the reference clock for both the 5422 and the 5124 (as per the
synchronization help file mentioned for synchronizing multiple
devices). Both the 5422 and the 5124 are triggered by a digital rising
edge (from the pulse train) on PXI_Trigger0/RTSI0 (as it was routed
there). For each trigger, the niFGEN generates a sawtooth waveform
using a stepped trigger mode and outputs it. For each trigger, the
niSCOPE acquires data. They are both synchronous, which is tough to see
since one has its trigger source on the front panel and the other has
its trigger source on the block diagram. All devices use PXI_Clock so
they are synchronized.
The expected behavior is to only generate a single sawtooth waveform
per trigger with a certain number of sample points. I want to acquire
the same number of samples using the niSCOPE, which is what I meant by
"the extent of the waveform" in my previous post. So, should I change
the 8192 to 1000 for the number of samples for the niSCOPE? What would
you recommend for the sampling rate? I have been using 5 MHz for the
niFGEN and 5 MHz for the niSCOPE...this is how it should be done,
correct? If it is different in the VI, please let me know. For some
reason, I have to adjust all of the values each time I open it since
the default values are not the ones I want.
I want to generate and acquire one waveform per trigger (one waveform
per record). However, I want to be able to record a large number of
records so I have enabled the circular buffer-like treatment of the
acquired waveforms. The 100 or 1000 records is actually just a number I
am giving it for now to make sure it is working before recording many
more records.
As for saving the niSCOPE data, I would like to save all data in a
single file that is NOT ascii (to save space). I have been looking at
the HWS file format, and would like to use it. I think the attached VI
includes this at the bottom of the while loop. For each trigger, I
would like to save the time (as accurate as possible) that the trigger
occurred for the record/waveform, which appears to be (absoluteInitialX
- relativeInitialX) as you said in your post (thanks!). I just need to
store as much information about the waveform and time information for
it as possible with the waveform in the file. So it looks like I will
need to use the wfm info for that information, providing portions of it
as waveform attributes in the HWS VI's?
What format of data do you recommend I fetch, and will I be fetching a
"Single waveform" or "Multiple waveforms"? Should I use I32, DBL, WDT,
or other for the format? A balance between good precision in values and
time it takes to fetch/record would be best.
Given all of the above, I am having one troube with saving data to a
file. As a reminder, I am deploying the project to the chassis over the
network. When I choose a location and/or file to save the HWS data to,
I only get choices that are on the PC's hard disk (such as C:\Documents
and Settings\cgifford\...) NOT the chassis's hard disk. When I choose
something other than "C:\" I get an error that the file could not be
opened. However, when I choose "C:\" everything goes fine. The saved
data is nowhere to be found on my PC though, so I am assuming that it
is being stored on the internal 60G hard disk in the chassis that must
be named "C" by default or something!?
I have been told by phone support that I should be able to make a
direct connection with the chassis just like another PC, and should be
able to access the information on its internal hard disk in a drag and
drop fashion. I however cannot directly connect to the PXI chassis to
get the data that has been saved on the hard disk. We are running
Windows XP on the PC. We did some poking around and noticed that the
chassis is not running Windows file sharing, and only has ftp and http
running. We tried to access it using ftp, but we didn't have a username
and password to supply it. So, how can we enable Windows file sharing
on the chassis? How can I connect to it to do drag and drop to get
saved waveform data off of it? This is the main problem I am now
facing. Eventually we would like to store data to an external hard disk
connected to the chassis, which assumes that I can have access to the
internal storage to tell it to save files to the external hard disk.
For now saving it to the internal hard disk is just fine until
everything is proven to work, but I would like to get the data off of
the internal hard drive to put on another computer.
Any answers/suggestions on my above questions are greatly appreciated.
I also want to thank you for reading this long post . I eagerly await
a reply. Thanks again in advance.
Chris
Attachments:
5124_update.vi ‏143 KB

How to call a report with a bind variable from a multi-record block

Hi,
I have created a report using the BI Publisher functionality. I did all the integration, created the SQL Query and uploaded the template. Up till here everythings fine!
My SQL Query has 2 bind variables.
I will call my report from a multi record block, at the end of each record an icon is shown which the user can click to open the report.
I created a column link for this item (PRINT_REPORT=Inschrijvingsformulier) but I do not manage to pass the parameters to my report. The parameters I want to pass are 2 columns in this Multi Record block.
I created 2 hidden fields on the page P9_PARAMETER1, P9_PARAMETER2 with the same names as my bind variables and fill this in with the values #PARAMETER1#, #PARAMETER2# from the multi record block.
It seems it does not work as my report stays empty. (also XML file stays empty).
Am I trying the wrong way?
Thanks for any advice,
Kris

hi khadeer,
create one report program and write the required code,and call this function module 'SSF_FUNCTION_MODULE_NAME' and give your smartform name and also when u activate ur smart form u will get one function module call that function module also and specify any tables used...
i think this solves ur problem...
any queries revert back..
pls reward points if helpful,
shylaja

Saving the record in multi-record block while updating

Hi gurus
I have a table name PT . Its is master table where PT_TYPE IS unique
desc PT
PT_TYPE VARCHAR2(2) unique,
PT_CODE VARCHAR2(4),This is the detail table on which the form is being designed is meant for insert/update/delete.Insert and delete are working fine.
desc PST
PST_PT_type varchar2(2) unique,
PST_A_code Varchar2(3) unique,
PST_A_desc varchar2(10) The form layout is a multi-record form as below and based on PST table with PT_CODE as non-base table item & PST_PT_TYPE
not displayed but its there in the block.
FORM_LAYOUT
PT_CODE PST_A_CODE PST_A_DESC
ASD          AS          TESTAS
ASD          AD TESTAD
ASD DS TESTDS.
Now the problem is when I am querying record through enter-query mode (say by entering PT_CODE 'ASD') and
change one of the base table items(PST_A_CODE or PST_A_DESC) values and commit it. its says '1 records applied and save'
but when I change ONE OF THE PT_CODE(non-base table item) values it says 3 records applied and saved. as the 3 records
are currently displayed when querying

Hi Craig,
Both below program unit is in the WHEN-VALIDATE-ITEM of NBT item PT_CODE
--this is to check that valid pt_code is entered
PROCEDURE val_pt_code IS
     cursor val_cur is
     select pt_code
     from pt
     where pt_code =:pst.pt_code;
v_dummy varchar2(12);
BEGIN
open val_cur;
fetch val_cur into v_dummy;
if val_cur%notfound then
close val_cur;
     warn_alert('Error:The Product Code entered does not exists');
     raise form_trigger_failure;
end if;
close val_cur;
END;
--this is to check that particular pt_type value is for the pt_code is selected
PROCEDURE get_pt_type IS
     v_pt_type varchar2(2);
begin
     select pt_type into v_pt_type
     from      pt
     where pt_code = :pst.pt_code;
     :pst.pt_type := v_pt_type;
exception
     when no_data_found then
          warn_alert('Error:The Syllabus Type does not exists');
     raise form_trigger_failure;
end;
--

Cursor Jumping to last record when query mode for Multi-record block.

I have a multi-record block. the seq field has this validation to check that there should not be a gap
in sequence for S_type and cer_dl field.The program unit is as below.
PROCEDURE seq_validation IS
--Validation to check that there is no gaps in sequence for S_TYPE and cer_dl fields
l_value_to_check varchar2(100);
l_seq_found number;
l_curr_sequence number;
l_new_value varchar2(100);
l_found boolean:=FALSE;
l_new_set boolean := FALSE; --s_type and cer_dl are different from previous set.
begin
if trim(:b1.s_type) is not null
or trim(:b1.cer_dl) is not null
then
-- Program continues here only if all the items are not null
-- Get information from record that needs to be validated
l_value_to_check := trim(:b1.s_type) || ':'|| trim(:b1.cer_dl) ;
l_curr_sequence := :sequence;
if :SYSTEM.CURSOR_RECORD = '1' then
---to check sequence is entered as 1 in the first record
message('Error:Sequence should start with 1');
raise form_trigger_failure;
end if;
go_item('b1.XYZ');
else
FIRST_RECORD;
while :SYSTEM.LAST_RECORD != 'TRUE'
loop
l_found := FALSE;
l_new_value := trim(:b1.S_type) || ':'|| trim(:cer_dl) ;
if l_new_value = l_value_to_check then --
l_new_set:= FALSE;
l_seq_found := :seq;
if l_seq_found >= l_curr_sequence then
go_item('b1.seq');
l_new_set := FALSE;
elsif l_seq_found < l_curr_sequence - 1 then
go_item('b1.sequence');
l_found := FALSE;
elsif l_seq_found = l_curr_sequence - 1 then
l_found:= TRUE;
go_item('b1.xyz); --go to next item
end if;
else
l_new_set := TRUE;
end if;
NEXT_RECORD;
end loop;
if l_new_set then
go_item('b1.xyz'); -- go to next item
else
if not l_found then
message('Error:Sequence should be in order.');
go_item('b1.seq');
raise form_trigger_failure;
end if;
end if;
go_item('b1.xyz'); ---go to next item
end if;
end if;
end;
In the insert mode its working fine(unless you gurus feel to change to make it more perfect.
When I say enter-query and put 'IAS' in the s_type field and then do a execute query it brings all the records of 'IAS'.
Now as I want to update the records, and when I navigate across field(s_type,cer_dl,Seq,xyz) using tab and move the cursor down on second
record(IAS N 2 N), what happens is when I navigate to sequence field the cursor jumps to LAST RECORD( IAS Y 3 N ) of LAST field XYZ.
I am putting the sample record
s_type cer_dl seq xyz
IAS N 1 N
IAS N 2 N
IAS N 3 N
IAS N 4 N
IAS Y 1 N
IAS Y 2 N
IAS Y 3 N
The cursor moves to last record --IAS -Y -3-N when I tab across the second record.

When I say enter-query and put 'IAS' in the s_type field...For your validation to work you must not allow users to enter records in the middle of a block, clear records from the block or query specific records. If you allow the users to enter a query then you are allowing 2 of the rules to be broken.

Duplicate item value in a Multi-Record Block

Is there a way to chek duplicate value entered in multi record block?
I have seen some solutions in this forum however nothing has worked for me till now. (using the formula, creating hidden items & creating group etc)
Thanks in advance,

To see if there are any other records in the block with the same value, use Kevin Clark's famous function to trap duplicates. You can find Kevin's function write up here:
Re: checking for same rows in a tabular
From Kevin's post:
Create a field PK_COPY in a control block.
Create program unit function COMPARE to compare two input params returning 1 if they match else 0.
Create a field in the datablock PK_MATCH, calculation property formula, formula COMPARE(:DATA_PK, :PK_COPY)
Create a field in the control block NO_OF_MATCHES, calculation property summary, summary type SUM, summarised
item PK_MATCH.
Also, your control block requires the Single Record property set to yes, and the base table block requires the Query All Records property set to yes.
WHEN-VALIDATE-ITEM on DATA_PK
:CONTROL.PK_COPY := :DATA_PK;
if :NO_OF_MATCHES > 1 then
message('You have already used that one');
Raise form_trigger_failure;
end if;

External LaCie Multi Recorder causing kernel panics since reloading OS

I just replaced my main internal hd with a new 1TB WD Caviar Black. I migrated all of my user information from my old drive via Time Machine & all seemed well. Since I did a fresh, zero out data install of the OS on the new drive, I need to reinstall my programs. Some of my older programs are kept on DVD-RAM disks that I've had since my old G4. To access these files I use my LaCie Multi recorder which was working fine prior to the HD switch.
When I put my DVD-RAM disk into the drive it's now causing kernel panics.
Anyone know what could have caused this or how I might correct the problem?
Thanks.

Okay, it seems that I've got a bad disk. I connected the drive to my laptop & used another dvd & all worked as it should. Put my program back-up disk in & it caused a panic.
New question, is there any way to repair the disk?
I've got DiskWarrior & TechTool Deluxe but I'm not sure how I might go about the repair as the panic occurs while the drive is trying to access the disk.

Multi-record / spread table...moveable fields in designer generated form

Good morning all;
I hope you are doing good...
Imagine a multi-record block layout with it's overflow property set to spread-table to accomodate 10 varchar2(25) fields. Now, of the hundreds of users working with this generated form, not one of them wants to see the fields in the same order on the screen.
What i would like to do is generate the form from designer so that a user could 'drag'n drop' let say, field #10 to the field #2 spot on the screen. Something like windows explorer where you can move the 'Size' column around so it is viewable without having to use the spread-table bar at the bottom of the screen...
Any idea on how to generate this form from designer?
Thank you and wish me luck!

I don't know a solution, but I think a solution could be easier found if it was a read-only block. You did not specify that. Then maybe you could dynamically change the query behind the block.
Good luck, Paul.

Updating a value of a text item in a multi record block based on a change

Hi,
I need to change the value of a text item in a multi record block based on a change to another item's value in the same block.
Suppose there's a text item in a multi record block called dt1 which is of type date, which is changed in a particular record. I want to change the values of the another item in the same multi record block, for all other records by running a loop through all the records in multi record block. I dont want to do it on the press of a button, it should do automatically on change. Help me resolve this issue.

Hi,
I need to change the value of a text item in a multi record block based on a change to another item's value in the same block.
Suppose there's a text item in a multi record block called dt1 which is of type date, which is changed in a particular record. I want to change the values of the another item in the same multi record block, for all other records by running a loop through all the records in multi record block. I dont want to do it on the press of a button, it should do automatically on change. Help me resolve this issue.

How to do it in multi-record block

Hi all,
i have 1 text items in a multi-record block number of record displayed 10
and i have values like 100 , 50, 30 in first 3 records and in 5th record i want to put some value like
20 then i want to calculate all values like 100 + 50 + 30 +20 = 200 and i want to put the total value in a single record block.
but my problem is i cannot able to calculate all the value because for the totale value i have to
write a for loop to loop through the record
but go_block() is not working in post_change .
if any solution is there plz suggest.......

Hi zeeshan
my problem is i cannot able to calculate all the value because for the total value
put the total value in a single record block.
First pls the following...
Guidelines for Working with Calculated Items Calculated items_
1- They are display-only control items.
2-Calculated items cannot be database items.
3.While you can set a calculated item's Enabled, Mouse Navigate, and Keyboard Navigable properties to Yes,
you cannot set the Insert Allowed or Update Allowed properties to Yes
Second Keyword: TOTAL is a reserved oracle key word... pls read the Details...
go_block() is not working in post_change .well u can use timers but no need for it u can reference block item but first u have to accumulate the values per record in WHEN-VALIDATE-ITEM TRIGGER in the last calculated item which is inserted by the user and assign it to the display item in ur current multi-record block :*block_name.total_item*.. as follow...
:block_name.total_item := :item1 + .... ; Then u create a second display item > no of records property = 1 , named e.g. final_summarized_totals
In order to summarize this total values accumulated in the multi-record display item named e.g. block_name.total_item
Finally using PRE-INSERT , PRE-UPDATE,PRE-DELETE Triggers to assign the value calculated into the display item * block_name.total_item* into the db_item into the previously mentioned Trigger Block-Level Off-course.
:block_name.total_db_tem := :i:block_name.final_summarized_totals ; Hope this helps...
Regards,
Amatu Allah

How can I create a loop in a multi-record block (on the background)

I have a multi-record block.
In one item I change a value.
Upon this change, in the when-validate-item I would like to
change other records in the same block.
I planned to loop the block with go_record and to do my things
in each record. Unfortunately the go_record built-in is
restricted and cannot be used in a wvi-trigger.
Another approach can be to update the records in the database
and to perform an execute_query after this change. Also this
procedure cannot be used in a wvi.
How can I easily loop in a multi-record block???

You can try to put loop with go_record in KEY-NEXT-ITEM on that
field.
Or if you change something and then press KEY-COMMIT you can
update another records in database and after commit do again
execute_query. Something like :
on KEY-COMMIT:
update_another_records;
commit_form;
execute_query;

Get next value in a Multi Record Block

Hi,
I've a Multi Record block with 2 items like below.
pos width
1 7
8 5
13 5
18 2
ie pos in next item is sum of pos and width of previous item.I've already implemented this.
The problem is if the user changes width in a particular record,I want to change next records pos automatically.
To achieve this,I wrote a when-new-record -instance-trigger as follws:
if :system.cursor_record=1 then
:pos:=1;
elsif :system.record_status='changed' then
:pos:=:pos+:width;
end if;
but even Though I change column width of block,:system.record_status still remain 'INSERT'.
Pls can u pls tell me how can I acheive this?
Prashanth Deshmukh

You cannot use Record Status like that.
You need to create a procedure that loops through your entire block, keeping track of the pos and width of the prior record to calculate the new pos of each record.
Your procedure would need to do something like this:
Declare
    v_Pos pls_integer := 1;
Begin
Go_block('B1');
First_Record;
Loop
    Exit when :System.record_status='NEW';
    :B1.pos := v_Pos;
    v_Pos := v_Pos + :B1.width;
    Exit when :System.last_record = 'TRUE';
    Next_Record;
End Loop;
First_Record;
End;

NiScope EX Multi Record vi program

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