populating multiselect with a saved search

Hi

I have spent hours trying to figure this out I am new to suitescrpting but I have studied the docs and searched the forums but I am stumped

here is my code the problem is is that my multiselect is empty there is no errors


function myLeadTypes(type, form){

  var searchColumns = new Array();
  searchColumns[0] = new nlobjSearchColumn("internalid");
  searchColumns[1] = new nlobjSearchColumn("name");
  var searchResults = nlapiSearchRecord('item', 69, null, searchColumns);
 
var LeadsTab = form.addTab('custpage_leads_tab', 'SampleTab');
var addthefield = form.addField('custpage_select_leads', 'multiselect', 'Select Lead Types', searchResults, 'custpage_leads_tab');


}