So I have something like this:
var xmlStatement:String = \"xmlObject.node[3].@thisValue\";
What mystery function do I have to use so that I can
Unfortunately this is not possible in ActionScript 3. This however might be a solution: http://blog.betabong.com/2008/09/23/e4x-string-parser/
For your example it would be: var attribute : String = String( E4X.evaluate( XMLList(xmlobject) , 'node[3].@thisValue' ) );