Help please, I can't get select list behavior correct

I have a demo application at apex.oracle.com http://apex.oracle.com/pls/apex/f?p=71968:1 username is demo, password is demo
I have a form with multiple fields
field1 (Text Field)
field2 (Text Field)
field3 (Text Field)
field4 (Text Field)
Status (Select List)
The select list has the following options:
Open
Working
Closed
Process flow is as follows:
Ticket created and status is defaulted to Open
Analyst does their work and if they save the ticket they move the status to working and apply changes so now Working is stored in the database as the status
When the work is complete, they select Closed and Apply Changes and the ticket is complete.
What I am trying to do here is set it up so that the analyst cannot select Closed or they receive a message when they select closed if field1, field2, field3, or field4 are empty.
I tried a dynamic action and I can get it to hide the close selection in the list and it will only appear when the fields are filled in, but say the ticket is in Working Status, after I fill in the fields, I see the Status selection list updating but then it changes the value to Open. All three options are now available, but the analyst may not want to close the ticket even though they have all the fields filled in. So I would want the status to stay in working but this automatically goes to Open.
So I guess in the end, I need a select list that maintains its current value but the option to see closed is only available when the three fields are all not null.
I have a demo application at apex.oracle.com http://apex.oracle.com/pls/apex/f?p=71968:1 username is demo, password is demo
You can see what I am referring to if you select the record in the Report section with the status of working. Then when it comes up, remove one of the values from the fields and you will see that instead of keeping the value as working it changes it to open. I want it to keep its current value unless that value was closed, in that case it can go back to open.
Any suggestions as to how to acoomplish this would be appreciated.
Thanks
Wally

Hi Wally,
You can change your lov as cascading lov and in the parent lov items, give the names of all that 4 fields. Also change your lov query as below
select DVALUE as display_value, RVALUE as return_value from STATUS
where ((vValue = 1 and (:PXXX_FIELD2 IS NULL OR :PXXX_FIELD2 IS NULL OR :PXXX_FIELD2 IS NULL OR :PXXX_FIELD2 IS NULL))
OR (:PXXX_FIELD2 IS NULL AND :PXXX_FIELD2 IS NULL AND :PXXX_FIELD2 IS NULL AND :PXXX_FIELD2 IS NULL).
Regards,
Natarajan
Edited by: Nattu on Mar 20, 2013 8:27 AM

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