I'm new on this forum but I'll see if I can't help you out with this.
since it is tracing " 1 " just like that, it may be a parse error. The quotes from php could be throwing it off(try single quotes maybe?) Otherwise, you may be able to take the substring of it like this:
var one:String = event.target.data.subString(2,3); //for a quick fix...
I'd start with the quote thing though and work from there. I do apologize though if none of this helps. Regular expressions might work too, but I'm no good at that yet