Scope of a placeholder column in Oracle Reports 6i

Hello,
I was under the impression that a placeholder was more like a global variable, i.e., it's accessible throughout the report if defined independently, outside of any group in the layout model?
Well, I am getting this error:
REP-1248 all source columns of placeholder must be in the same group.
Is my understanding incorrect? I really need to have a "global" type variable that's accessible across all groups in the report. How shall I go about it? Please advise.
Regards,
Smita

Thanks, but the link didn't help me. Basically, this is the situation:
First, I have a placeholder column independent of any group in the report, which I am trying to access and use as a global variable across multiple groups in the report.
There is a parent group with two child groups. The first child group has a summary columm. I assign the summary column's value to the placeholder column inside a formula column.
In the second child group I decrement the placeholder column's value by one for every record processed in this group inside a formula column. When the placeholder column's value reaches 0, I am doing something in the format trigger on the frame associated with the second child group.
...and I get this error:
REP-1248: All source columns of placeholder 'CP_NumLinesLeft' must be in the same group.
So the placeholder column is really not behaving like a global variable. Please advise as to how I should get around this problem.

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Hi Hong Kong King Kong,
From looking at that function name (and the group name): Is this an Oracle Reports generated function?
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By the way, I like your synonym for 'query'.
I'm sure I'll confuse some of my collegues tomorrow when I will mention 'database interrogation' instead of 'query'. ;)
edit
Doh...I should not underestimate the information that is posted in thread subjects.
Edited by: hoek on May 5, 2010 9:24 PM

Need urgent help how show my placeholder column in my report

hi master
sir
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Is this Oracle Reports bug – "break order property" in "group above" report

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How to order / group a report by a placeholder column ?

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>
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>
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Scope of a placeholder column in Oracle Reports 6i

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