Selection screen value and Passing null in ABAP

[former_member1146939]

Selection Screen :

Code:

SELECTION-SCREEN BEGIN OF BLOCK B2 WITH FRAME TITLE TEXT-002.
SELECT-OPTIONS : S_PLANT FOR VBAP-WERKS NO INTERVALS.
SELECTION-SCREEN END OF BLOCK B2.

What I want :

When User will submit the form then Factory/Plant

then if value is null then it will show ALL in header

LOOP AT S_PLANT.
IF IT_SECONDARY IS INITIAL.
S_PLANT-LOW = 'ALL'.
MODIFY S_PLANT.
ELSE.

CASE S_PLANT-LOW.
WHEN '2100'.
S_PLANT-LOW = 'SDL'.
MODIFY S_PLANT.
WHEN '1100'.
S_PLANT-LOW = 'SIL'.
MODIFY S_PLANT.
ENDCASE.
ENDIF.
ENDLOOP.

wa_top-typ = 'A'.
wa_top-info = ''.
concatenate 'Plant : ' S_PLANT-LOW
into wa_top-info SEPARATED BY SPACE.
APPEND wa_top TO it_top.
CLEAR wa_top.

But it's not working. Please Help

[venkateswaran_k]

Hi

Hope you have written the header portion in the "top of page" event in the report.

Can you show us the code

[Sandra_Rossi]

Debug your code and tell us the calculated value of S_PLANT-LOW, if it's null or ALL. If it's still null, I guess you can continue the debug and find the bug...