Hi Pavan,
Instead of using a custom field you can assign your search help to the standard field itself...
DATA lo_nd_items TYPE REF TO if_wd_context_node.
DATA lr_node_info TYPE REF TO if_wd_context_node_info.
* navigate from <CONTEXT> to <ITEMS> via lead selection
lo_nd_items = wd_context->path_get_node( path = `COMP_CONTEXT.ITEMS` ).
IF lo_nd_items IS NOT INITIAL.
lr_node_info = lo_nd_items->get_node_info( ).
IF lr_node_info IS NOT INITIAL.
* Replace the standard search-help for Product id
CALL METHOD lr_node_info->set_attribute_value_help
EXPORTING
name = `ORDERED_PROD`
value_help_mode = lr_node_info->c_value_help_mode-ddic
value_help = 'ZSHLP'.<--custom shlp name here
ENDIF.
ENDIF.
Try this.
Thanks,
Anubhav