Display Icon in WebDynpro ALV column

Hi experts,

I am trying to display ICON in WebDynpro ALV column by using below code.

data:  lr_image           TYPE REF TO cl_salv_wd_uie_image,

         ls_column          TYPE salv_wd_s_column_ref.

         CREATE OBJECT lr_image.

         lr_image->set_source_fieldname( ls_column-id ).

         ls_column-r_column->set_cell_editor( lr_image ).

When the data is fetched this column field fills with the value 3(ICON_LED_GREEN) and 1(ICON_LED_RED).

But it is displayed in the below way.

What is the problem ?

BR,

Eshwar