Smartform for Account Statement ?

Hello Gurus,

I have a requiremnt to change the Account Statement

SAP Script : F140_PAY_CONF_01 to Smartform.

I could not find a standard SF, so changed the driver program RFKORD10 and uploaded script to SF and made the changes.

But now when I try to assign new Print Program and SF....,it does not take the SF.

It shows an error saying that the form I entered is not a vald Script.

Does it not take Smartforms ? Can't we Use smartforms for Account Statemnt ?

I am using ECC 6.0. My functional Consultant does not know if thre are standard smartforms.He is asking me to develop a ZSF

Please clarify my doubt.

Regards,

Venky