Problem with smartform interface

Hi guys,

I want to put a strucuture in my import and tables in smartform interface using my own type,,, but it gives me an error that the type is not pre-defined...

whta should I do?

I have this type:

TYPES: BEGIN OF t_likp,

vbeln LIKE likp-vbeln,

lfdat LIKE likp-lfdat,

END OF t_likp.

I want to declare in import in interface...

wa_likp type t_likp... is it possible?

thanks a lot!