Actionscript 3：创建变量对象并从解析的XML文件中分配类

I've set up an XML file with names of objects that will be contained in a fla/swf library. I wish to position the objects on the stage using an XML file that can be quickly modified without having to recompile the fla/swf file. Of course, positioning can only be accomplished when the objects are instantiaed and added to the stage. The problem is passing the parsed XML file name/class paring data into the var creation programatically.I've set up an XML file with names of objects t