Progress Indicator within ALV

Hi all,

I have another small problem. In my wd application ther is an ALV output. Within this list I want to display a progress indicator. I tried this:

  DATA: lr_cellvar TYPE REF TO cl_salv_wd_cv_standard,
        l_cellvar TYPE string,
        lr_progress_indicator TYPE REF TO cl_salv_wd_uie_progr_indicator,
        lt_columns                TYPE salv_wd_t_column_ref,
        ls_column                 TYPE salv_wd_s_column_ref,
        lr_column                 TYPE REF TO cl_salv_wd_column.

  LOOP AT lt_columns INTO ls_column.
    lr_column = ls_column-r_column.
    CASE ls_column-id.
      WHEN 'PROGRESS_STATUS'.

        CREATE OBJECT lr_cellvar.
        l_cellvar = 'CV_SB'.
        lr_cellvar->set_key( l_cellvar ).

        CREATE OBJECT lr_progress_indicator.
        lr_progress_indicator->set_percent_value_fieldname( 'PROGRESS_STATUS' ).
        lr_progress_indicator->set_display_value_fieldname( 'PROGRESS_DISP_VALUE' ).
        lr_progress_indicator->set_tooltip( 'Fortschrittsanzeige Status des Vorganges' ).
        lr_progress_indicator->set_bar_color( '00' ).

        lr_cellvar->set_editor( lr_progress_indicator ).

        lr_column->add_cell_variant( lr_cellvar ).
        lr_column->set_width( '75' ).
        lr_column->set_position( '-1' ).
        lr_column->set_selected_cell_variant( l_cellvar ).
    ENDCASE.

  ENDLOOP.

But only the first row in ALV is shown as well as progress indicator.

Any Ideas?

Many Thx and best regards

Stefan