Page item value set in app process not maintained after page submit

Hi -- I have a sequence of events that goes like this:
1) Page 0 region REG_1 is rendered before footer
- Region REG_1 uses javascript / AJAX to call App process PROC_1
- PROC_1 sets Page1 item PAGE1_MESSAGE to X
- After PROC_1 executes successfully, REG_1 does doSubmit()
2) Page 0 region REG_2 is rendered before footer; this happens
after the page submit done by REG_1. (Conditions ensure that
REG_1 is not rendered again)
- Region REG_2 displays PAGE1_MESSAGE (=X) in an alert.
- Region REG_2 uses javascript / AJAX to call App process PROC_2
- PROC_2 sets Page1 item PAGE1_MESSAGE to Y
- PROC_2 sets Application item DEBUG to PAGE1_MESSAGE (this is for debugging)
- PROC_2 sets Application item APP_MESSAGE to Y (this is also for debugging)
- After PROC_2 executes successfully, REG_2 does doSubmit()
3) After REG_2 submits the page, here's what I have:
- Application item APP_MESSAGE = Y. Good. This is what it was set to in PROC_2.
- Page 1 item PAGE1_MESSAGE = X. Bad. This is what it was set to in PROC_1.
- Application item DEBUG = Y. Good. This at least shows that PAGE1_MESSAGE was
set to Y within PROC_2... but for some reason that value is not being preserved
after the app process is done executing.
- There are several other application items set in PROC_2, and they're all correct.
Any ideas as to why this is happening? It seems like this should be
pretty straightforward: set the value, submit the page, the value should be what
I set it to.
Thanks,
Carol

Hi -- Thanks for the suggestions. First and 3rd (default value, or being overwritten by process or computation) aren't happening. The source for PAGE1_MESSAGE having is Always, Using app item PAGE1_MESSAGE... but I don't see what else could work here. Not sure if that's the problem.
I've put an example on apex.oracle.com. Workspace is dew_mir_tor. Username is [email protected]. Password is Mir97Dew77!Tor. Application is 22679, RefreshAllTest.
To reiterate the description in my original posting, but using the real application item/region/process names:
0) Press Button REFRESH_ALL on Page 1. This branches back to Page 1.
1) Page 0 region Refresh_All is rendered before footer
- Region sends up an alert to show you it's working
- Region Refresh_All uses javascript / AJAX to call App process REFRESH_CZAR (You'll see a "wait" window flash up briefly while the app process is running)
- REFRESH_CZAR sets Page1 item P1_MESSAGE_1 to X (The text here indicates where
the value is being set and when it should be displayed)
- After REFRESH_CZAR executes successfully, region Refresh_All does doSubmit()
2) Page 0 region Refresh_Non_Czar is rendered before footer; this happens
after the page submit done by Refresh_Czar. (Conditions ensure that
Refresh_Czar is not rendered again)
- Region sends up an alert to show you it's working
- Region Refresh_Non_Czar displays P1_MESSAGE_1 in an alert.
- Region Refresh_Non_Czar uses javascript / AJAX to call App process REFRESH_NON_CZAR (You'll see a "wait" window flash up briefly while the app process is running)
- REFRESH_NON_CZAR sets Page1 item P1_MESSAGE_1 to Y (The text here indicates where
the value is being set and when it should be displayed
- REFRESH_NON_CZAR sets Application item TEST_VALUE2 to P1_MESSAGE_1 (this just shows that P1_MESSAGE_1 was indeed set to Y in this process...)
- After process REFRESH_NON_CZAR executes successfully, region Refresh_Non_Czar does doSubmit()
3) After Refresh_Non_Czar submits the page, Page 0 region Display_Messages is rendered.
It sends up an alert so you can see it's working, and then it displays the value in P1_MESSAGE_1.
The value is still the one that was set in REFRESH_CZAR, not the one set in REFRESH_NON_CZAR.
Note that Display_Messages sets P1_MESSAGE_1 back to null, so you won't see it in session state after it's displayed in the alert. But you can see that TEST_VALUE2 is set to the message from REFRESH_NON_CZAR.
Hope this helps solve the problem!
Thanks,
Carol

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