Why is my nlapiSearchRecord's search results not displaying in my Suitelet?

I'm editing a Suitescript 1.0 Suitelet so that it displays the customer's recent transactions, which I am able to successfully test in my browser's javascript console. But in the Suitelet the nlapiSearchRecord's search results are not displaying. Also.."Debug 1" and "Debug 2" are displayed, but "Debug 3" is not displayed. Can anyone help me troubleshoot the problem?

function displaySuccessPage(request, response)  {    var customerID = getRequestParameter(request, "customerID", "Customer ID");      response.write("Your order has been submitted successfully.  Please review the customer's recent transactions below: <br/><br/>");    response.write("Debug 1<br/>");    var filters = new Array();    filters[0] = new nlobjSearchFilter('internalid', 'customer', 'is', 11409);    var columns = [];    columns.push(new nlobjSearchColumn('internalid'));    columns.push(new nlobjSearchColumn('trandate').setSort(true));    columns.push(new nlobjSearchColumn('status'));    var searchResult = nlapiSearchRecord('transaction', null , filters , columns);    response.write("Debug 2<br/>");    response.write(searchResult[0].rawValues[0].value);    response.write("Debug 3<br/>");    }