Converting object to XML

I am using the following code to convert an object into XML:
public function objectToXML(obj:Object, qname:String="root"):XML
               var qName:QName = new QName(qname);
               var xmlDocument:XMLDocument = new XMLDocument();
               var simpleXMLEncoder:SimpleXMLEncoder = new SimpleXMLEncoder(xmlDocument);
               var xmlNode:XMLNode = simpleXMLEncoder.encodeValue(obj, qName, xmlDocument);
               var xml:XML = new XML(xmlDocument.toString());
               return xml;
The resultant XML will have nodeName "item". Is it possible to customize it?
Thanks

If it is a simple object, maybe build up a string on your own.

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