Sorry, but you don't understand basic things..
I was sure that you use code like:
*XDIM_MEMBERSET COST_CENTER = CC_NONE
*FOR %COMP%=%COMPANY_CODE_SET%
*XDIM_MEMBERSET COMPANY_CODE = %COMP%
*RUNALLOCATION
*FACTOR = 1
*DIM COST_CENTER WHAT=CC_NONE; WHERE=[COMP_CODE]="%COMP%"
*ENDALLOCATION
*NEXT
Vadim