Help with script

Hi,

Can anyone tell me what I am doing wrong with the following script:

var newRecord = nlapiGetNewRecord();

var filters = new Array();


for ( i = 1 ; i <= newRecord.getLineItemCount('item'); i++ ) {
  var itemID = newRecord.getLineItemValue('item','item',i);


  filters[0] = new nlobjSearchFilter('internalid',null,'equalTo',itemID,null);

  var columns = new Array();

  columns[0] = new nlobjSearchColumn('displayname');
  columns[1] = new nlobjSearchColumn('featureddescription');

  var searchresults = nlapiSearchRecord('inventoryitem',null,filters,columns);

  var item_name = searchresults[0].getValue('displayname');
  var description = searchresults[0].getValue('featureddescription');


  var itemRecord = nlapiLoadRecord('inventoryitem',itemID);

  nlapiLogExecutionNote('DEBUG','itemID='+itemID);
  nlapiLogExecutionNote('DEBUG','itemRecord='+itemRecord);
  nlapiLogExecutionNote('DEBUG','itemName='+item_name);
  nlapiLogExecutionNote('DEBUG','description='+description);