Process After Input (PAI) Dynpro 200

MODULE user_command_0200 INPUT.
 
  CASE ok_code.
    WHEN 'LEAVE'.
      LEAVE PROGRAM.
    WHEN 'BACK'.
      CALL FUNCTION 'DEQUEUE_EZ_SPFLI'
        EXPORTING
          mode_spfli = 'E'
          carrid     = spfli-carrid
          connid     = spfli-connid.
      LEAVE TO SCREEN 100.
    WHEN 'SAVE'.
      MODIFY spfli FROM spfli.
  ENDCASE.
  CLEAR ok_code.
 
  wa_flug = spfli.
 
ENDMODULE.