hi guru's,
in my selection screen one parameter(companycode) and two select options (vkorg, vtweg ) are there.
i want to validate this fields such as ' once we select company code it should have to give vkorg data if we press f4 for vkorg related to our selected company code.
same for vtweg . it should check relatd vtweg's in company code as well as vkorg.
plz...
send me the code and explaination .
thanks in advance.