PHPToolkit, searchRowList values don't exist...

Hi there,

I have a search that I am doing for item records.  I am wanting to return the values for quantityOnHand and quantityOnOrder.

This search works and results are displayed for all products that have a value in the quantityOnHand field.  If there isn't a value in the quantityOnHand field, it fails.

Here is my code:
<?php

require_once 'PHPtoolkit.php';
require_once 'login_info.php';
global $myNSclient;
$itemId = $_GET["itemId"];

$id = 'customsearch1670';
$searchItem = array('savedSearchScriptId' => $id);
$searchAdvanced = new nsComplexObject('ItemSearchAdvanced');
$searchAdvanced->setFields($searchItem);

$search = new nsComplexObject('ItemSearch');

$textnumberfield = new nsComplexObject('SearchStringField');
$textnumberfield->setFields(array('operator'=>'contains','searchValue'=>$itemId));