Problem double click ALV GRID

Hi folks,
I'm trying to get an ALV GRID to make something if I double click one line, this is my code:
FORM create_alv.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
        EXPORTING
             i_callback_program = sy-repid
             I_CALLBACK_USER_COMMAND = 'USER_COMMAND'
             is_layout          = gs_layout
             it_fieldcat        = gt_itab_catalog[]
             i_default          = 'X'
             i_save             = 'A'
             it_events          = events[]
        TABLES
             t_outtab           = itab_all
        EXCEPTIONS
             program_error      = 1
             OTHERS             = 2.
IF sy-subrc <> 0.
ENDIF.
ENDFORM.
FORM USER_COMMAND USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield.
break-point.
CASE r_ucomm.
    WHEN '&IC1'.
      READ TABLE itab_ekko INTO wa_ekko INDEX rs_selfield-tabindex.
*      PERFORM build_fieldcatlog_ekpo.
*      PERFORM event_call_ekpo.
*      PERFORM populate_event_ekpo.
*      PERFORM data_retrieval_ekpo.
*      PERFORM build_listheader_ekpo USING it_listheader.
*      PERFORM display_alv_ekpo.
ENDCASE.
ENDFORM. "user_command
Why when I'm double clicking the form USER_COMMAND isn't being executed. The break-point I set in there doesn't get executed.
Can anyone tell me if i'm missing something.
Thanks for your help in advance.
Regards,
Gilberto Li

Hi again,
Ok here's the code:
FORM init_catalog.
* SOCIEDAD
    gt_itab_catalog-fieldname = 'BUKRS'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Sociedad'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 1.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* CONTRATO
    gt_itab_catalog-fieldname = 'EBELN'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Contrato Marco'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 2.
    gt_itab_catalog-outputlen = 15.
    gt_itab_catalog-hotspot = 'X'.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* CLASE DE DOC
    gt_itab_catalog-fieldname = 'BSART'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Clase de Contrato'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 3.
    gt_itab_catalog-outputlen = 15.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* RIGE DESDE
    gt_itab_catalog-fieldname = 'KDATB'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Rige desde'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 4.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* VENCE
    gt_itab_catalog-fieldname = 'KDATE'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Vence el'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 5.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* FECHA DE CREACION
    gt_itab_catalog-fieldname = 'AEDAT'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Creado el'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 6.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* PROVEEDOR
    gt_itab_catalog-fieldname = 'LIFNR'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Proveedor'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 7.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* NOMBRE DE PROVEEDOR
    gt_itab_catalog-fieldname = 'NAME1'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Nombre Proveedor'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 8.
    gt_itab_catalog-outputlen = 20.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* CED JURIDICA
    gt_itab_catalog-fieldname = 'STCD1'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Cédula Jurídica'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 9.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* MATERIAL
    gt_itab_catalog-fieldname = 'MATNR'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Material'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 10.
    gt_itab_catalog-outputlen = 18.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* NOMBRE DE MATERIAL
    gt_itab_catalog-fieldname = 'MAKTX'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Desc. Material'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 11.
    gt_itab_catalog-outputlen = 20.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* MONTO
    gt_itab_catalog-fieldname = 'NETPR'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Monto'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 12.
    gt_itab_catalog-outputlen = 16.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
* MONEDA
    gt_itab_catalog-fieldname = 'WAERS'.
    gt_itab_catalog-tabname = 'ITAB_ALL'.
    gt_itab_catalog-seltext_l = 'Moneda'.
    gt_itab_catalog-just = 'L'.
    gt_itab_catalog-col_pos = 13.
    gt_itab_catalog-outputlen = 10.
    APPEND gt_itab_catalog.
    CLEAR gt_itab_catalog.
ENDFORM.                    "init_catalog
FORM init_layout.
gs_layout-zebra = 'X'.
gs_layout-f2code = '&ETA'.
gs_layout-detail_popup = 'X'.
gs_layout-no_totalline = 'X'.
ENDFORM. "init_layout
FORM listado.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
        EXPORTING
             i_callback_program = g_repid
             I_CALLBACK_USER_COMMAND = 'USER_COMMAND'
             it_fieldcat        = gt_itab_catalog[]
        TABLES
             t_outtab           = itab_all
        EXCEPTIONS
             program_error      = 1
             OTHERS             = 2.
IF sy-subrc <> 0.
ENDIF.
ENDFORM.
FORM USER_COMMAND USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield.
break-point.
CASE r_ucomm.
    WHEN '&IC1'.
      READ TABLE itab_ekko INTO wa_ekko INDEX rs_selfield-tabindex.
*      PERFORM build_fieldcatlog_ekpo.
*      PERFORM event_call_ekpo.
*      PERFORM populate_event_ekpo.
*      PERFORM data_retrieval_ekpo.
*      PERFORM build_listheader_ekpo USING it_listheader.
*      PERFORM display_alv_ekpo.
ENDCASE.
ENDFORM. "user_command
PERFORM init_catalog.
PERFORM init_layout.
PERFORM listado.
I just post the ALV GRID creation code.
Hope you guys can guide me through this.
Thanks again.
Regards,
Gilberto Li

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