Hyperion Business Rules and Essbase

I have an allocation business rule that uses the DATACOPY command to copy data from one cost center to another. I would now like to have the sum of 2 cost centers copied into the allocation cost center. In an Essbase calc script, I accomplished this by FIXing on some dimensions and then:
DATACOPY cc1 TO alloc_cc;
alloc_cc = alloc_cc + cc2
This works fine in a calc script, but the business rule does not like the "alloc_cc = alloc_cc + cc2" line. How do I accomplish this task in a business rule?
Thanks.
Terri T.

when I validate, I get this message.
Detail:Cannot calculate. Essbase Error(1200354): Error compiling formula for [alloc_cc] (line 13): expected type [NUMBER] found [STRING] (["CC2"]) in function []
Edited by: Terri T on Jan 30, 2013 11:07 AM

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