ALV`den veri alma problemi

GET_GLOBALS_FROM_SLVC_FULLSCR

FORM user_command USING r_ucomm LIKE sy-ucomm
                  rs_selfield TYPE slis_selfield.

  DATA wa_out like line of gt_out. DATALR_REF1 TYPE REF TO CL_GUI_ALV_GRID.
  
  CASE r_ucomm.
    WHEN `BTSAVE`.
 
 CALL FUNCTION `GET_GLOBALS_FROM_SLVC_FULLSCR`
    IMPORTING
      E_GRID LR_REF1.

  CALL METHOD LR_REF1->CHECK_CHANGED_DATA.

      LOOP AT gt_out INTO wa_out WHERE sel `X`.
       
      ENDLOOP.


        rs_selfield-REFRESH `X`.
  ENDCASE.
ENDFORM.