Can anyone explain..? (branches conditional)

Hi!
In my application I have 2 branches with following logic:
1. if ERRMSG IS null - Branch to Page 5
2. else - Stay in Page 7
If I use the condition: Value of Item in Expression 1 is NULL with :ERRMSG in the first branch and No Condition in the second it does not work.
If I use the PL/SQL condition with: :ERRMSG is null it does work.
The weird thing is: If I change the logic to
1. if ERRMSG IS null - Branch to Page 7
It DOES work with the Value of Item in Expression 1 is NULL branch.
So my question is: Can anyone explain? Or tell me the difference between the conditions?
Edited by: user1037913 on 2-jul-2010 1:35
Edited by: user1037913 on 2-jul-2010 1:35

>
The weird thing is: If I change the logic to
1. if ERRMSG IS null - Branch to Page 7
It DOES work with the Value of Item in Expression 1 is NULL branch
>
It probably doesn't, it probably just hits the unconditional branch.
Try changing the unconditional branch to have a sequence of 999 and remove the colon from the 'Value of Item in Expression 1 is NULL with :ERRMSG' branch. I would use PL/SQL anyway as it gives you more flexibility to change/add things later.
Cheers
Ben

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