$self->prepare_ajax_search( $c,
                              { target_type => 'Application',
                                search_spec => { 'application.opp_id' =>
                                                     $c->stash->{'opp'}->id()
                                },
                                stash_vars => { 'replace_data' => [
                                                        { key => 'custom_lnk',
                                                          value => $custom_lnk
                                                        }
                                                ],
                                },
                              } );