Editable Text View in Webdynpro ALV

Hi,

How to make one text view column editable in Webdynpro ALV.

I have tried below code, but the field is not becoming editable:

CALL METHOD lv_value->if_salv_wd_column_settings~get_column

     EXPORTING

       id    = 'ACTNT'

     RECEIVING

       value = lr_column.

   CREATE OBJECT lr_txview.

   CALL METHOD lr_txview->set_text_fieldname

     EXPORTING

       value  = 'ACTNT'

lr_column->set_cell_editor( lr_txview ).

Thanks and Regards,

Debarshi Maity