script logic: splitting the values from BW cube to BPC cube

Hi Experts

I need to split the value in to 12 from BW customized cube and should post in to BPC via script logic .

Can you please help me in correcting script logic and what are the parameters required in default logic to bring this data from BW cube to BPC Cube.

*XDIM_MEMBERSET COST_CENTER = 1001

*XDIM_MEMBERSET COST_ELEMENT = 401001

*XDIM_MEMBERSET TIME = BAS (%YEAR%.TOTAL)

*WHEN TIME

*IS = BAS(%YEAR%.TOTAL)

*REC(EXPRESSION = %VALUE% / 12,TIME = BAS(%YEAR%.TOTAL)

*ENDWHEN

*COMMIT