interface - problem in getting value of the object attribute in flex -

I have an XML that contains the 'interface' sub tag, IAM converted to XML to use the sample XMLDiCoder do. The compiler did not allow me to reach the value of the trustobject's trusted 'Antifex'.

  var xml: XML = event.result as XML; Var xmlDoc: XMLDocument = New XMLDocument (xml.toString ()); Verde decoder: Simple XML code = new simple XML code (true) var result object: object = decoder dxodexml (XMLDOC); Var o: object = new object (); O.someprop = resultObj.maintag.item.interface;  

Can the interface be treated as a keyword? Can someone tell me the solution for this? Thanks in advance

  o.someprop = resultObj.maintag.item ["interface"];