Search help in Determination to NWBC field screen.

Hi Experts.

I created a field in NWBC screen and I want put a search help for this field.

Could I call a search help function inside my Determination for this field ?

For example when i want to block a field i use:

  lo_property->set_attribute_read_only(

              EXPORTING

               iv_attribute_name = 'ZPACKTYPE'

               iv_key            = ls_item-key

               iv_value          = abap_true ).

And it works.

But when I want input a search help with data selected in my validation and dont know how do it.

do you  know how to do it?Or  do you know  a page in sap TM guide that teach it.?

Thanks