Need to show the Condition amount or percentage(KBETR) in display mode.

Hi,

i need to show the Condition amount or percentage(KBETR) in display mode for VA02 transaction based on the condition type. the KBETR in the table control. so how it will become in display mode?

already i tried with this code.

in MV45AFZZ form userexit_field_modification.

case screen.

when screen-name = 'KOMV-KBETR'.

read table xkomv with key kschl = c_xr1(XR1).

if sy-subrc = '0'.

SCREEN-INPUT = '0'.

endif.

in debugging mode the condition is satisfying but not modifying the screen.

can anyone help me . please it is urgent.