Page Item Values do not appear

I created a page in Application Express 4.2.3.00.08. The page has a process name COMPUTE_STATUS to execute after footer. The page process has the following pl/sql code:
begin
if :P55_KEY_FOB_ID is null then
:P55_OLD_KEY_FOB_ID_NULL := ‘Y’;
ELSE
:P55_OLD_KEY_FOB_ID_NULL := ‘N’;
end if;
end;
This variable is used in a condition on a dynamic action which is not working properly. When I look at the session state the value of P55_OLD_KEY_FOB_ID is set correctly. However, if I change the status of the variable P55_OLD_KEY_FOB_ID from hidden to text field the value displayed on the page is null (empty) even though the session data indicates that it is set. If I click edit page 55 and then click run then data shows in P55_OLD_KEY_FOB_ID. What is causing the lag between the session state data and the actual data on the page. Is there any way to push the data because I think this is why the variable is not useful in my conditions. Is there a way to access the va;ue through javascript?

it sounds like APEX is working as intended.
As a Process, the execution location is in the wrong spot for your requirements.
You are updating 'server side' information that is normally sent to the web client during the 'Region' execution part of web page creation.
But, you are updating the 'server side information' AFTER the 'Region' section. As such, the value is never sent to the web client.
I'm sure you could retrieve it via javascript, but there may be better ways to do it. (eg an APEX Calculation instead of a Process).
If you want to keep it as a Process, you'll need to move it to the same execution location as the "Automatic Row Fetch" but with a higher Sequence.
That location is usually "On Load - Before/After Header".
If this doesn't answer your question, please set up an example on apex.oracle.com so that others can take a look at it.
Make sure you create a Developer account so that you don't have to give out your email address to the spam-bots.
MK

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2. I'm looking for ideas about what can be done to debug such an infrequent bug with serious implications.
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I'm having a weird problem where very infrequently I will load a page and I'll notice that one or more page regions, report rows, or page item values are missing. If I reload the page the missing parts appear as they normally should.
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Edited by: Jason G on Jul 24, 2009 12:43 PM

Well, thanks for reading the post anyway.
While working through some debugging steps I realized that I was populating some of the regions as the page rendered using AJAX -- this would pause the page rendering until the AJAX request returned. I believe that a hanging AJAX call was the likely culprit of the very intermittent symptoms I was seeing.
I moved the AJAX calls to the last region of the page and added a javascript function that "watches the page load" by checking for regions by ID and looking at javascript boolean flags to let me know when the page is fully rendered. If this process takes longer than 5 seconds it notifies the user that something happened and offers to reload the page for them in an effort to fix the issue.
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say P55_COURSES_TO_EVALUATE is my page item name and it is a select list.Based on the value selected,in the next page i shd show details related to the selected value and for this i need P55_COURSES_TO_EVALUATE value in the next page.How Do I get it?When I try to retrieve the values it simply returns nothing.
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Kees,
Your approach is excellent and brilliant:-)
I tried with your steps and i can achieve those alignment in both ways like you said(either on page load/through DA).
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<li>Suppose if the report, is classic whether i can go with the same approach that i have achieved alignment with the IR report.
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