if condition in smartform
i have to write a if condition...in the smartform....
this smartform has 1 window called info1...where 1 table is there..in the main area..in ane line area two cells are there...one cell is for vat id text...another is for VAT ID work area.
i have to write down the if condition if VBRK-LANDTX = "CH".
than display VAT ID.
please tell me how to write this one.