Smartform Implementation issue for the report RFKORD50

Hi,

I have a requirement to implement a smartform for FI Invoice.

This smartform should be configured in OB96 for the print program RFKORD50.

Currently the SAP Script F140_DOCU_EXC_01 has been configured for Standard print program RFKORD50.

This SAP Script should be replaced with Smartform. But the issue is the report RFKORD50 is designed to

call only a SAP Scrip. Is there any better way to trigger the Smartform other than modifying the standard program?

Thanks,

Sailaja.A