addField with a joined result

Hi all,

I'm trying to do something very simple, this first section grabs a list of items and other details about an existing customer.

 filters[0] = new nlobjSearchFilter('custrecord_itempartinlocation',null,'is',searchResults[i].getValue('internalid'));  columns[0] = new nlobjSearchColumn('displayname','custrecord_itempartmanageditem',null);  columns[1] = new nlobjSearchColumn('custrecord_itempartserialnumber',null,null);  columns[2] = new nlobjSearchColumn('custrecord_itempartlocationinproperty',null,null);  columns[3] = new nlobjSearchColumn('custrecord_itempartactivateddate',null,null);    var searchResultsItems = nlapiSearchRecord('customrecord_itemparticulars',null,filters,columns); 

The search results return exactly what I want, verified in the debugger. The problem happens when I try to show the result in a subList.

 sublist[i].addField('displayname','text','Item Name',null);  sublist[i].addField('custrecord_itempartserialnumber','text','Serial Number',null);  sublist[i].addField('custrecord_itempartlocationinproperty','text','Location in Property',null);  sublist[i].addField('custrecord_itempartactivateddate','date','Activated Date',null);    sublist[i].setLineItemValues(searchResultsItems);