output based on selection
i'm working on MM report,
i got one field in selection screen as
PRODUCT TYPE = -
(eg 6A, 6B, 6C)
if i execute result should be based on this..
if PRODUCT TYPE = -
(eg 1A, 2B)
it should give some other output....
and should not take 6A, 6B in selection.
how to approach this......