helpful suggestions with the code

I am trying to zero out the value in variable account

*XDIM_MEMBERSET DATASRC = MANUAL

*XDIM_MEMBERSET ACCOUNT= VARIABLE

*XDIM_MEMBERSET WEEK = 2011.FP1,2011.FP2,2011.FP3,2011.FP4,2011.FP5,2011.FP6,2011.FP7,2011.FP8,2011.FP9,2011.FP10,2011.FP11,2011.FP12

*XDIM_MEMBERSET SCENARIO= ACTUAL

//*CALC_EACH_PERIOD

// LOGIC BEGINS

*WHEN ACCOUNT

*IS VARIABLE

*END WHEN

*WHEN ACCOUNT

*IS VARIABLE

*REC(EXPRESSION=0)

*ENDWHEN

*COMMIT