Problem passing parameter from one interactive report to another

Hi.
I'm going slightly mad over this simple problem.
Apex 4.0.2 installed. Created one interactive report with 4 columns, one is linked to a custom target which is another interactive report where the column is used in the WHERE clause through a hidden field value.
This works fine in other applications on same Apex install, but not in this one.... Writing the hidden field to the screen shows that it gets the correct value from the first report, but the SQL-query returns no rows when querying on the :<parameter_name> value (there are rows in database - query runs fine when hard coding a value).
Tried link column both directly from the column value link definition, and from the report definition - both pass value ok to hidden field, but SQL-query doesn't pick it up.
Tried deleteing and recreating second report page, same problem.
Anyone else had this problem? Are there any properties on the pages/fields that I've forgot to set, that may cause the session value not to be set when the query is running? I've got it working in other apps, and can't find anything done differently there....
Regards,
-Haakon-

Yes, it shows the correct value. Also creating a second text field and assigning it the Source value of the hidden field shows the correct value in the textbox on page load.
It's only the report's sql query that doesn't seem to get the value. Hard coding a document number (without hyphens etc) works fine, I get the expected records - so the rest of the query is correct.
Tried '=' and LIKE - but still nothing...
It's just the sql variable substitution of :P21_DOCNO that under no circumstance will work.... also tried a simple pl/sql block with the variable - nothing.... using the V('P21_DOCNO') - nothing....
It seems like the sql query is parsed and run before the hidden field gets it's value or something....
This is very strange - as it works in another application on same Apex installation.

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Message was edited by:
sunil kumar
Message was edited by:
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Edited by: Erlan Kadraliev on Feb 8, 2011 4:50 PM
Edited by: Erlan Kadraliev on Feb 8, 2011 4:58 PM
Edited by: Erlan Kadraliev on Feb 8, 2011 4:59 PM

Hi Ethan Jewett
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OR
Maybe if you will answer for next question, i will be able solve problem , How can i send parameter CG001 (this is %GROUPS_SET%, for example it stay in EXCEL in cell A5) from excel to script logic by running package. Maybe i can get cell value on Dynamic Script Data Management?
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