Script logic not working for GL account with Zero balance

Dear Experts,

I have a scenario where the GL account balance in ECC is 0  and when a script logic runs in BPC the same should capture a closing balance as "1".

Though I have written the below logic, this is not getting executed and writing back the value as "1".

Kindly help me on the same.

*WHEN ENTITY

*IS "ABC"

*WHEN ACCOUNT

*IS "20300000"

*REC(EXPRESSION = 11, ACCOUNT = 20300000,FLOW = F99, ENTITY = ABC, PROFITCENTER  = 130010 ,  INTERCO = I_NONE , CONSOSCOPE = G_NONE, CURRENCY = LC ,CATEGORY = ACTUAL, AUDITID = INPUT)

*ENDWHEN

*ENDWHEN

*COMMIT

Regards,

Shilpa