Problem with flow control using ALV grid

Hi to all,

i was writing a program to display batch job definitions in an ALV grid. The grid was placed in a docking container. After creating the ALV object, I registered two event handlers like this:

CREATE OBJECT go_handler.

  CALL METHOD go_alv_list->register_delayed_event
    EXPORTING
      i_event_id = cl_gui_alv_grid=>mc_evt_delayed_change_select.
  SET HANDLER go_handler->job_clicked FOR go_alv_list.
  SET HANDLER go_handler->angeklickt FOR go_alv_list.

The handler methods are defined like this:

    methods job_clicked for EVENT double_click of cl_gui_alv_grid
            IMPORTING E_ROW
                      E_COLUMN.


    methods angeklickt for event DELAYED_CHANGED_SEL_CALLBACK
            of cl_gui_alv_grid.

the coding of method double_click and called modules:

    perform usercomm using 'PICK' e_row-index e_column-fieldname.
-------------------------------------------------
FORM usercomm  USING r_ucomm LIKE sy-ucomm
                     iv_index iv_fieldname.

  DATA ls_list LIKE LINE OF gt_list.

  CASE r_ucomm.
(...)
     WHEN 'PICK'.
      READ TABLE gt_list INTO ls_list INDEX iv_index.
      CHECK sy-subrc = 0.
      CALL METHOD zcl_jobc_xbp=>job_sm37_zeigen
        EXPORTING
          jobname = ls_list-jobname.

     call method cl_gui_cfw=>flush.

  ENDCASE.

endform.
--------------------------------------------------
method JOB_SM37_ZEIGEN.


  submit z_jobc_show_sm37
         with jobname = jobname
         and return.


endmethod.

The called report contains a call of the function module "BP_JOB_MANAGEMENT" in order to display information about the double-clicked job in the SM37 way.

What the problem is:

when the user quits the SM37-like display, the event double_click is being fired immediately again. The function is called once again. This happens not every time, but in about 60% of all tries.

How do I get the program to exit the function module and return reliable to the main list?

Thanks to all