LoadVar == string only?

Ive been looking all arround and I cant find the answer to my question …

First off is the LoadVar for Strings/Numbers only? (I’m using PHP to feed flash)
if so is there a way arround it?
Could I use XML

I have a combo box and right now I’m just trying to populate it via PHP

How can i get an object like {data:5, label:‘click happy’}; to stay an object?

thus far Ive only seen it as a number or a string so when it outputs into the comboBox it shows exactly what you see.