Copy Standard BAPI BAPI_AR_ACC_GETPERIODBALANCES to ZBAPI

Hi Experts,

I need to copy standard BAPI BAPI_AR_ACC_GETPERIODBALANCES to ZBAPI. I need to have fiscal year as my input parameter. The standard one is for current fiscal year. I need it for any given year. How to achieve this? I have copied the standard to zbapi. But the includes are not getting copied and where to write the code for fiscal year.

Regards,

Marina.