Dynamically generating reports

Hi,
I have one doubt in generating reports dynamically.I have a dropdown box having two values
say"value1","value2".When i select value1 i need to display a report and when value2 is selected i need to display
another report in the same region. In the first report i have to display a column as a link and when clicking that link i
need to popup another page.In the second report i do not need any link columns.How can i achieve this.
Thanks,
tj

Hi,
Actually these reports are not tabular form reports.These reports are formed from 3 tables using join operation.
When clicking value1 in the select list:
I need to display report having details of devices of type1 and type2 (Details means the user,location
etc) . In that details devicename must be a link.The location must be a selectlist.It is possible to add an LOV to this
selectlist.
When clicking value2 in the select list:
I need to display report having details of devices of type2 (Details means the user,location etc) . Here
devicename is not a link.The location must be a selectlist.It is possible to add an LOV to this selectlist. Plz help,
Thanks,
tj

Similar Messages

How do I access(read) dynamically generated reports with WebLogic WebServer

Hello Everyone,
In our application we are generating reports (pdf format) at run time. How do
we read these files.....which directory should we store these files to... I am
using Weblogic 6.0.
These files have timestamp as part of their name so the names are not static.
Thanks in advance.
Ahsen

We ran into this also. If you read the J2EE specs carefully you will see
that your app is only guaranteed to have write-access to a single directory,
defined by the context attribute "javax.servlet.context.tempdir" -- I can
find the exact reference if you want.
Here is how to get this attribute:
File tempdir = (File) getServletContext()
.getAttribute("javax.servlet.context.tempdir");
log.debug("context temp dir = " + tempdir.getAbsolutePath());
Although this may seem horribly restrictive, it makes a lot of sense on a
secure system where applications are deployed by a specific user, and may
have at runtime minimal filesytem priviledges -- your app can't write
anywhere, at the exception of the context temp dir. I know this would be the
way I'd setup my container on a Unix system for example.
So, what's a developer to do? You can either bypass the issue and always
generate your content dynamically, with a servlet setting the appropriate
MIME type to the output, or write your reports to the context temp dir and
manually serve content from there.
Frankly I think the first option is by far the most simple, easier to
implement, and thus attractive; if it leads to a performance problem, you
can always solve that with a Web cache. Doing otherwise (caching the content
yourself) opens the door to many issues, that really shouldn't be your
problem as a Web application developer. Keep it simple!
--Renaud
"ahsen" <[email protected]> wrote in message
news:173_3bc31ee1$[email protected]..
>
Hello Everyone,
In our application we are generating reports (pdf format) at run time.How do
we read these files.....which directory should we store these files to...I am
using Weblogic 6.0.
These files have timestamp as part of their name so the names are notstatic.
>
Thanks in advance.
Ahsen

Error while running dynamically generated report

Hello All,
I have created report which returns sql query based on plsql function body. But when I run the report, it errors out as follows.
Error during rendering of region "Geography Report".
ORA-01403: no data found
Technical Info (only visible for developers)
is_internal_error: true
apex_error_code: APEX.REGION.UNHANDLED_ERROR
ora_sqlcode: 100
ora_sqlerrm: ORA-01403: no data found
component.type: APEX_APPLICATION_PAGE_REGIONS
component.id: 3
component.name: Geography Report
error_backtrace:
ORA-06512: at "SYS.WWV_DBMS_SQL", line 904
ORA-06512: at "APEX_040100.WWV_FLOW_DYNAMIC_EXEC", line 488
ORA-06512: at "APEX_040100.WWV_FLOW_DISP_PAGE_PLUGS", line 424
ORA-06512: at "APEX_040100.WWV_FLOW_DISP_PAGE_PLUGS", line 3283
ORA-06512: at "APEX_040100.WWV_FLOW_DISP_PAGE_PLUGS", line 4204
I am not sure why this error is coming up. If I change the report type to sql query and write a sql query its coming correctly. I tested the function and its working correctly. SQL which is being returned also works correctly when I execute in SQL.
Any idea why this error is coming up.
Thanks,
Mahesh

Query
<<
SELECT DISTINCT geo.geography_element1 country,
geo.geography_element1_code country_code ,
geo.geography_element2 state,
geo.geography_element3 city,
geo.geography_element4 postal_code
FROM hz_geographies geo
WHERE 1=1
and trunc(sysdate) between trunc(geo.start_date) and nvl(trunc(geo.end_date), trunc(sysdate))
and geo.country_code = :P1_COUNTRY
and geo.geography_type = 'POSTAL_CODE'
>>

How to generate report with dynamic variable number of columns?

How to generate report with dynamic variable number of columns?
I need to generate a report with varying column names (state names) as follows:
SELECT AK, AL, AR,... FROM States ;
I get these column names from the result of another query.
In order to clarify my question, Please consider following table:
CREATE TABLE TIME_PERIODS (
PERIOD     VARCHAR2 (50) PRIMARY KEY
CREATE TABLE STATE_INCOME (
     NAME     VARCHAR2 (2),
     PERIOD     VARCHAR2 (50)     REFERENCES TIME_PERIODS (PERIOD) ,
     INCOME     NUMBER (12, 2)
I like to generate a report as follows:
AK CA DE FL ...
PERIOD1 1222.23 2423.20 232.33 345.21
PERIOD2
PERIOD3
Total 433242.23 56744.34 8872.21 2324.23 ...
The TIME_PERIODS.Period and State.Name could change dynamically.
So I can't specify the state name in Select query like
SELECT AK, AL, AR,... FROM
What is the best way to generate this report?

SQL> -- test tables and test data:
SQL> CREATE TABLE states
2    (state VARCHAR2 (2))
3 /
Table created.
SQL> INSERT INTO states
2 VALUES ('AK')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AL')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AR')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('CA')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('DE')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('FL')
3 /
1 row created.
SQL> CREATE TABLE TIME_PERIODS
2    (PERIOD VARCHAR2 (50) PRIMARY KEY)
3 /
Table created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD1')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD2')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD3')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD4')
3 /
1 row created.
SQL> CREATE TABLE STATE_INCOME
2    (NAME   VARCHAR2 (2),
3      PERIOD VARCHAR2 (50) REFERENCES TIME_PERIODS (PERIOD),
4      INCOME NUMBER (12, 2))
5 /
Table created.
SQL> INSERT INTO state_income
2 VALUES ('AK', 'PERIOD1', 1222.23)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('CA', 'PERIOD1', 2423.20)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('DE', 'PERIOD1', 232.33)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('FL', 'PERIOD1', 345.21)
3 /
1 row created.
SQL> -- the basic query:
SQL> SELECT   SUBSTR (time_periods.period, 1, 10) period,
2            SUM (DECODE (name, 'AK', income)) "AK",
3            SUM (DECODE (name, 'CA', income)) "CA",
4            SUM (DECODE (name, 'DE', income)) "DE",
5            SUM (DECODE (name, 'FL', income)) "FL"
6 FROM     state_income, time_periods
7 WHERE    time_periods.period = state_income.period (+)
8 AND      time_periods.period IN ('PERIOD1','PERIOD2','PERIOD3')
9 GROUP BY ROLLUP (time_periods.period)
10 /
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> -- package that dynamically executes the query
SQL> -- given variable numbers and values
SQL> -- of states and periods:
SQL> CREATE OR REPLACE PACKAGE package_name
2 AS
3    TYPE cursor_type IS REF CURSOR;
4    PROCEDURE procedure_name
5       (p_periods   IN     VARCHAR2,
6        p_states    IN     VARCHAR2,
7        cursor_name IN OUT cursor_type);
8 END package_name;
9 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY package_name
2 AS
3    PROCEDURE procedure_name
4       (p_periods   IN     VARCHAR2,
5        p_states    IN     VARCHAR2,
6        cursor_name IN OUT cursor_type)
7    IS
8       v_periods          VARCHAR2 (1000);
9       v_sql               VARCHAR2 (4000);
10       v_states          VARCHAR2 (1000) := p_states;
11    BEGIN
12       v_periods := REPLACE (p_periods, ',', ''',''');
13       v_sql := 'SELECT SUBSTR(time_periods.period,1,10) period';
14       WHILE LENGTH (v_states) > 1
15       LOOP
16         v_sql := v_sql
17         || ',SUM(DECODE(name,'''
18         || SUBSTR (v_states,1,2) || ''',income)) "' || SUBSTR (v_states,1,2)
19         || '"';
20         v_states := LTRIM (SUBSTR (v_states, 3), ',');
21       END LOOP;
22       v_sql := v_sql
23       || 'FROM     state_income, time_periods
24           WHERE    time_periods.period = state_income.period (+)
25           AND      time_periods.period IN (''' || v_periods || ''')
26           GROUP BY ROLLUP (time_periods.period)';
27       OPEN cursor_name FOR v_sql;
28    END procedure_name;
29 END package_name;
30 /
Package body created.
SQL> -- sample executions from SQL:
SQL> VARIABLE g_ref REFCURSOR
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2,PERIOD3','AK,CA,DE,FL', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2','AK,AL,AR', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR
PERIOD1       1222.23
PERIOD2
              1222.23
SQL> -- sample execution from PL/SQL block
SQL> -- using parameters derived from processing
SQL> -- cursors containing results of other queries:
SQL> DECLARE
2    CURSOR c_period
3    IS
4    SELECT period
5    FROM   time_periods;
6    v_periods   VARCHAR2 (1000);
7    v_delimiter VARCHAR2 (1) := NULL;
8    CURSOR c_states
9    IS
10    SELECT state
11    FROM   states;
12    v_states    VARCHAR2 (1000);
13 BEGIN
14    FOR r_period IN c_period
15    LOOP
16       v_periods := v_periods || v_delimiter || r_period.period;
17       v_delimiter := ',';
18    END LOOP;
19    v_delimiter := NULL;
20    FOR r_states IN c_states
21    LOOP
22       v_states := v_states || v_delimiter || r_states.state;
23       v_delimiter := ',';
24    END LOOP;
25    package_name.procedure_name (v_periods, v_states, :g_ref);
26 END;
27 /
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR         CA         DE         FL
PERIOD1       1222.23                           2423.2     232.33     345.21
PERIOD2
PERIOD3
PERIOD4
              1222.23                           2423.2     232.33     345.21

Generating report based on dynamically generated sql query

I have to rewrite asp reports to oracle reports.
The original application has forms in asp where reports are generated dynamically based on the options selected.
There are many options to select.
Some add filter criteria to where clause.
I have no problem with this. As i can generate report using parameter form.
whereas i don't know how to generate reports whose columns change based on the user selection.
The front end screens are going to be in java and jsp pages. The only way i can think of is generating reports on all possible options the user may select. But, as there are more than 15 options, i think this is not the right approach.
How can i achieve this.
Thank you very much.
navya.

One method that comes to mind would be to use an after parameter form, and use lexical parameters to create dynamic statements.
For example in your after pform:
If :P_NAME = 'JOHN' then
:P_SELECT = 'SELECT COL1, COL2 ';
:P_FROM = 'FROM JOHN ';
:P_WHERE = 'WHERE COL3 = 'JOHN';
END IF;
Then in your query, you could say:
&P_SELECT
&P_FROM
&P_WHERE
Something like that - If only parts of you where statement will change, you can just write that one part -
like
IF :P_STATE is not null then
:P_STATE = ' and table.state = :P_STATE_IN ';
else :P_STATE = ' and 1=1 ';
end if;
and in your query...
where....
&:P_STATE
So IF a person enters a state, then limit the search to that state, or else do a 1=1.
Hope this gives you a start

Dynamically generating the ssrs dataset and filling the data into the dataset and binding it to ssrs report dynamically

I have a work to do, in ssrs we are using server reports in our project. i am looking for dynamically generating the ssrs dataset and filling the data into the dataset and binding the dataset to ssrs report(RDL) dynamically.
Getting the dataset dynamically has a solution by using Report Definition Customization Extension (RDCE), but the problem is binding that dataset to the report(RDL) dynamically was not there.
Here is the reference for RDCE http://www.codeproject.com/Articles/355461/Dynamically-Pointing-to-Shared-Data-Sources-on-SQL#6
I looked for binding the dataset to the report(RDL) dynamically and searched many sites but i did not get the solution. Can anyone help me here.
Is there any custom assemblies or any Custom data processing extensions to work around. Please help.
Thanks in advance

Hi Prabha2233,
Thank you for your question.
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated.
Thank you for your understanding and support.
Regards,
Vicky Liu
Vicky Liu
TechNet Community Support

Dynamic generated SQLfor report regions

is it possible to do the following to generate the sql statement of a report region dynamically?
for example i have on page 1 some checkboxes ( to show or not to show columns of the report)
checkbox1: show col1
checkbox2: show col2
checkbox2: show col2
based on the selection of these checkboxes i would like to dynamically generate the sql content of a report region on page2
Select col1, col3,
from my_table

Andy, thank you very much! this looks perfect to me.
just one more question:
Is it ( or will it be) possible to change the sql source of a report region itself dynamically
my "dream" would be an object related approach like :
reportregion_name.sql_source = v_sql;
where v_sql is generated dynamically by a procedure or process.
i had a look at ps/sql dynamic regions, but i have the feeling that i would loose all advantages of APEX ( like page rendering,...)

PLSQL processing of a dynamic sql report

Hi there,
I have a problem processing a dynamic sql report, specifically in referencing the PL/SQL column headings I have.
Basically I have a report that generates one row for each project a person belongs to, and then using htmldb_item.text creates one field for each day of the week (sysdate - sysdate+6) so that people can enter their hours worked. The idea is they then press a submit button and the hours are entered into a project table something like (date_worked, project_id, hours_worked), one row for each entry.
So I have:
for i in 1..HTMLDB_APPLICATION.G_F01.count
loop
... err... here I want to insert into the table the values(column_header, project_id, HTMLDB_APPLICATION.G_F01(i)).. but I don't know how to access that column_header value.
Is this possible and if so, how?
Many thanks,
Tosh.

that gives me the values of the text fields, but what
I'd like to insert is the value of the column
header... so for example:Yes, I understood what you meant. I did have a differect project_id for each INSERT in my SQL above. I guess that should have been day_id
Since you are generating the tabular form SQL manually, you know which htmldb_item.text index corresponds to which column (which represents day_id in your case). So, use this to write 6 INSERT statements, one for each day. day_id would be a number going from 0 thru 6 where 0 represents Sunday and 6 represents Saturday.
Bottom line: This is like generating/updating a calendar, your column headings are always fixed (Sun thru Saturday), just the date they represent would change.

Dynamic crystal report generation - issues with column headings

Hi All, 
I'm trying to generate a crystal report dynamically based on a "result set" data(Query: select REPORT_ID, REPORT_NAME, REPORT_DESC, RPT_FILE_NAME, LOCATION from IRS_REPORT_DETAILS). I'm able to generate the report run time, But the report is without columns heads. I would like to include the column headings as well. 
I searched the API(RAS) and found that there is a 'add(java.lang.String fieldName, java.lang.String headingText) " method present in "ReportObjectController" using which we can add the headings. 
ReportDefController reportDefController = clientDoc.getReportDefController();
ReportObjectController reportObjectController = reportDefController.getReportObjectController();
reportObjectController.add( "{Table.Field}", "FieldName" );
 
I'm facing problems in using this code. When trying to use this function for my fields(Ex: reportObjectController.add( "{ IRS_REPORT_DETAILS.REPORT_ID}", "Report ID" );) it is giving me the following error: "com.crystaldecisions.sdk.occa.report.lib.ReportSDKGroupException: The field was not found.---- Error code:-2147213310 Error code name:fieldNotFound" 
The following is my dynamic crystal report generation code: 
public ReportClientDocument execute(String repName, String query) {
 ReportClientDocument boReportClientDocument = null;
 try {
 boReportClientDocument = new ReportClientDocument();
 boReportClientDocument.newDocument();
 // Add a table based on the given Resultset to the report.
 dbConnResultSet mySampleResultSet = new dbConnResultSet();
 //mySampleResultSet.execute(query);
 boReportClientDocument.getDatabaseController().addDataSource(
 mySampleResultSet.execute(query));
 IReportSource test = boReportClientDocument.getReportSource();
 // Access all the database fields
 DatabaseController databaseController = boReportClientDocument
 .getDatabaseController();
 IDatabase database = databaseController.getDatabase();
 Tables tables = database.getTables();
 ITable table = (Table) tables.getTable(0);
 int NO_OF_FIELDS = table.getDataFields().size();
 int LEFT_POSITION = 200;
 // Add all the database fields to the report document
 for (int i = 0; i < NO_OF_FIELDS; i++) {
 IField field = table.getDataFields().getField(i);
 FieldObject fieldObject = new FieldObject();
 fieldObject.setFieldValueType(field.getType());
 fieldObject.setDataSource(field.getFormulaForm());
 IReportObject rep = (IReportObject) fieldObject;
 IObjectFormat objformat = rep.getFormat();
 objformat.setEnableCanGrow(true);
 objformat.setHorizontalAlignment(Alignment.from_int(1));
 rep.setFormat(objformat);
 rep.setLeft(LEFT_POSITION);
 rep.setWidth(1000);
 LEFT_POSITION = LEFT_POSITION + 1000 + 50;
 ISection section = boReportClientDocument
 .getReportDefController().getReportDefinition()
 .getDetailArea().getSections().getSection(0);
 //***************** Data being added to the report here, But headings are not added*****************
 boReportClientDocument.getReportDefController()
 .getReportObjectController().add(rep, section, i);
 boReportClientDocument.createReport();
 /*Some report saving code is present down*/
 } catch (ReportSDKException ex) {
 ex.printStackTrace();
 } catch (Exception ex) {
 ex.printStackTrace();
 return boReportClientDocument;
 
appreciate your help.

IField field = table.getDataFields().getField(i);
Here you are getting the first field in the array. This may not be the field you want to add since we aren't sure how the arrays are ordered when retrieving fields from the report. It is better to retrieve the fields with the findObjectByName method, thus ensuring you are retrieving the field you want to add to your heading.

Change the source of place holder dynamically in report

Hi,
We need to assign values to place holder dynamically in report pages based on the page number.
Basic requirement is to have dynamic images (generated in before report trigger with file name having timestamp and page number) in dynamic pages (getting repeated based on number of lines in the report).
Is there any way we can have a place holder mapped to this field (Read from file, type: Image) and change the source dynamically when each page is formatted?
Any pointers for this will be helpful.
Thanks,
Ayyappa

Hi,
We need to assign values to place holder dynamically in report pages based on the page number.
Basic requirement is to have dynamic images (generated in before report trigger with file name having timestamp and page number) in dynamic pages (getting repeated based on number of lines in the report).
Is there any way we can have a place holder mapped to this field (Read from file, type: Image) and change the source dynamically when each page is formatted?
Any pointers for this will be helpful.
Thanks,
Ayyappa

Displaying dynamically generated HTML

Hi!
Is it possible to display dynamically generated HTML-page by means of ITS?
I want to write report in ABAP and generate HTML-page with report data, then display it on client side.
Is it possible?
Thanks!

Hello,
As long as it has a transaction code then probably yes. Just use the webgui service.
Edgar

How to create dynamic web report in 10G Grid Control

Hi experts..
In OEM 9i, it provides a OEMgenerationServlet servlet to generate dynamic Web reports, my company uses the servlet to generate many OEM report, those reports cal also take parameters, such as dabatase name. the generated web reports are viewable to public end users. I am looking for a similar function in 10G Grid control...
Does anyone have the similar requirement, any suggestion will be highly appreciated..
Regards,
Jinsen

Hi,
Thank you for the reply. I read about Clear and Purge from Oracle Doc about 10gR2, but nothing about R1. I drilled down all the way, can't find any thing to click for clear and purge. And I can't find anything from Oracle Doc, either.
Laura

Generate report on server and open it in a client report viewer, possible?

Hi guys,
We are new to Crystal report so please feel free to correct me if I had the idea wrong.
Our client-server application was written in a language other than Java and Dot Net. We want to use Java and Crystal SDKs to glue our application, the Crystal Report Server and Report Viewers together...
We are planning to collect report parameters within the client of our own application (due to attributes of our application and parameters we need) and then pass it back to the server side (our server, not Crystal server). Our server will then generate a XML file and run a Java program talks to the Crystal Report Server (XI R2) to run a report with the XML file and store the result on the server side. Then it will send a message back to the client, tells it the report has been generated. Then our client program will fire up the Crystal Report Viewer to view the report.
I was just wondering if it is possible to do what we wanted with Java SDKs that are available to us (JRC, Viewer SDK and Report Application Server SDK)? Has anybody done the similar thing before?
Also we would like to have some drill-down reports with XML as report data source. Would it be possible to intersect drill-down event fired in a report viewer(Java and Web)? I would imagine the report viewer will then call some Java program talk to our application server to generate XML file for the drill-down section and then some how programmatically tell the viewer to display the drilled down report with the XML file just generated... Will my design work? Any advice or thought will be highly appreciated.
Thank you,
Dong

If you are using Crystal Reports Server, you can do almost everything you want using the RAS Java SDK. RAS will accept XML as a runtime datasource, and then manipulate the report at the server end and render the report in the DHTML viewer. If you want your client to call the viewer, have it call the JSP file that the viewer code has been added to.
The RAS SDK doesn't have any ability to intercept or manipulate drill down events, so the second part of what you would like to do may not be possible. Because our viewers are dynamically generated there is no source code to look at or use to make changes to the viewer outside of what is available in the viewer SDK.
Below is a link to the developer library with the Report Application Server SDK that has sample code and tutorials to do what you need to do, as well as the Java Docs of the RAS SDK.
http://devlibrary.businessobjects.com/BusinessObjectsXIR2SP2/en/devsuite.htm

Dynamically generated parameter form

We are dynamically generating the parameter form using a jave compiler.
It takes a lot of time to come up for some reports and is quite quick on others. Has any folowed this approach and encountered the same issue.

dear prabhakar99
Can I be in touch with you? Do you have any contact details?
please reply soon

Dynamic Oracle reports with queries

I would like to know what the method is for dynamically enerating reports in Oracle, when you want to provide some values for certain fields, based on which the report is generated. For example, I may want the user to specify a range of dates, such as >7/12/00 and <12/12/00 or something, so as to generate a report giving the information for all records with dates lying in between those two dates...similarly, there could be some other
fields for which also values could be specified as a range or a specific value.
Can this be done by adding user parameter to the parameter form in Oracle reports? Otherwise, is there any way to connect an Oracle form to reports, which would allow the user to specify these criteria in the Oracle
form, and then based on the criteria a report would be generated? If that is possible, I suppose, it would also
be possible to provide a drop down list if necessary, from which the values for the
fields/criteria could be selected. I don't suppose such a thing could be done by just adding user parameter to the parameter form...
I would appreciate a response to this.
Thanks.
Suchitra

I think it could be done with either of the two things you said. You could have them enter the dates in a form, then pass whatever they enter to the report using a parameter list (create_parameter_list built-in) and the run_product built in. Or you could have them enter the paramters in a parameter form. See the report "HOW TO CREATE A DYNAMIC REPORT USING LEXICAL PARAMETERS" under "Documentation" on the technet site for help. I'm trying to do similar things so I haven't quite worked it all out yet but I'm getting there.
Good luck...

Dynamically generating reports

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