Probelm in module pool selection screen

Question

Hi,
I wanted to create transaction variant for my selection screen which i have to design through module pool
if use the following code im not able to get the screen fields during trancation varian creation
call screen 1001.
SELECTION-SCREEN BEGIN OF SCREEN 101.
  SELECTION-SCREEN BEGIN OF BLOCK BL1.
   select-options:s_matnr for mara-matnr.
  SELECTION-SCREEN END  OF  BLOCK BL1.
Kindly giv me a solution for the above query.
Thanks In Advance,
Santhiya B

Answer 1

Hi,
The easy way out is use a report program so you can have a normal selection screen and enjoy the variant capability for free. You can then do a 'call screen' so the rest of your processing will behave like a dialog program.
If that's not possible, here's another option. It's not elegant, but I've done it. If others have better ways, please do share.
1) Create a dummy program (ZXXXVARI). In this program, all it needs is the selection fields similar to what you have in your module pool.
2) Add buttons to your dialog screen so users can choose variants, save variant, etc.
3) Define internal array VALUTAB LIKE RSPARAMS.
4) When user wants to save their selection, populate VALUTAB, then call FUNCTION 'RS_CREATE_VARIANT' EXPORTING CURR_REPORT = "ZXXXVARI", etc., or call function 'RS_CHANGE_CREATED_VARIANT', depending on whether the variant already exists on the table VARI or not.
5) When user wants to choose a variant to use, just display the variants in VARI under his id. Once he selects a variant, CALL FUNCTION 'RS_VARIANT_CONTENTS' to retrieve the values saved and put them on the dialog screen.