Klasse CL_SALV_LAYOUT_SERVICE funktioniert nicht für Z Report

Code: Alles auswählen.

PARAMETERS:       p_layout    TYPE disvariant-variant.

INITIALIZATION.
  PERFORM get_default_layout CHANGING p_layout.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_layout.
  PERFORM f4_layouts CHANGING p_layout.

START-OF-SELECTION.
  TRY.
      CALL METHOD cl_salv_table=>factory
        EXPORTING
          r_container  = cl_gui_custom_container=>default_screen
        IMPORTING
          r_salv_table = DATA(r_alv)
        CHANGING
          t_table      = gt_data
    CATCH cx_salv_msg.
  ENDTRY. 

    ls_layout-report = sy-repid.
    data(r_layout)= _r_alv->get_layout( ).
if r_layout is bound.
   r_layout->set_key( ls_layout ).
    r_layout->set_save_restriction( if_salv_c_layout=>restrict_none ).
endif.

" 2 includes für Unterprogramme
FORM get_default_layout  CHANGING p_p_layout.
  DATA:
    ls_layout TYPE salv_s_layout_info,
   ls_key    TYPE salv_s_layout_key.

  ls_key-report = sy-repid.

  ls_layout = cl_salv_layout_service=>get_default_layout(
    s_key = ls_key
    ).

 p_layout = ls_layout-layout.

ENDFORM.

FORM f4_layout  CHANGING p_p_layout.
  DATA: ls_layout TYPE SALV_S_LAYOUT_INFO,
        ls_key    TYPE salv_s_layout_key.

  ls_key-report = sy-repid.

  ls_layout       = cl_salv_layout_service=>GET_DEFAULT_LAYOUT( s_key    = ls_key ).
*  p_layout = ls_layout-layout.

ENDFORM.