Re: Update internal table.

Try registering the events before calling set_table_for_first_display and add this after calling the ALV:

  SET HANDLER g_application->handle_tf_user_command FOR
              tf_grid.
  SET HANDLER g_application->handle_tf_data_changed FOR
              tf_grid.
  SET HANDLER g_application->handle_tf_data_changed_finish FOR
              tf_grid.

I know, ALVs can make you nuts...