How to do this?

I'm loading an XML document that contains properties about "slides" in a presentation. When the XML loads each slide builds as an object with it's params. Everything works perfect except now I need to add graphics, instead of just text, to the stage based on the slide object params. I have an object in the library being exported as "StateMap". In my xml params of the slide it's name is StateMap. How can I convert the string StateMap into a display object and then add it to the stage?

So if Slide 1B has 4 lines of text and an image from the library, I want to build the 4 lines on the stage and then place the image on the stage. The image is exported for actionscript in the library but I cannot get the xml to store a name or reference and figure out how flash converts that to a display object.

Thanks