[flexcoders] accessing node via XML.child()

[Matthew Ganz]

hi. 

i'm trying to access a node using myXML.child("nodeName") and it's throwing an 
error. 

i create my XML object by passing a string as an arg in a method invocation:

gmlParser.convertStringToXML(event.data)

public function convertStringToXML(s:String):Array{
   gml = new XML(s); 
   var coordinatesStr:String = gml.child("gml:coordinates");
  }

i get the error message: 'a term is undefined and has no properties'

what does that mean? can't i retrieve by node name using the child() method?

any tips are appreciated. 

thanks. -- matt.