error in my form

dear gurus.

this is written in my form in main window.

PERFORM SCRIPT_CURR IN PROGRAM ZFI_RFFOUS_C

USING &REGUH-RWBTR&

CHANGING &G_RWBTR&

CHANGING &W_CUR&

ENDPERFORM.

when ever i saw in my form utilities-- prnting test --print priview , then i got this error , Element window FOOTER is not defined for form $ OA.

when i click in error i got message no. TD427.

please help , if i comment USING &REGUH-RWBTR& , then

no error ...

thanks