i have a field in window.
in form i have added that new field.
PERFORM FVALUE IN PROGRAM ZDCILAYOUT
this code in sub-routine.
READ TABLE out_par WITH KEY 'DISCOUNTT'. out_par-value = DISCOUNTT.
IF sy-subrc = 0.
MODIFY out_par INDEX sy-tabix.
but problem is that in out_par that structure for output parameters, DISCOUNTT is not coming in that structure.
i have activated the forms also.