Hi,
put code in get_bezei fetch vsart value and fetch description for that value from your custom table then pass that value to value
DATA:
l_ref_entity TYPE REF TO if_bol_bo_property_access.
l_ref_entity = me->typed_context->context_name->collection_wrapper->get_current( ).
IF l_ref_entity IS BOUND.
gv_vsArt = l_ref_entity->get_property_as_string( 'VSART' ).
ENDIF.
value = 'desc"
Regards,
Deepika.