Migration Problem

Im having a problem migrating some actionscript 2.0/Flash 8 code to actionscript 3.0/Flash 9. Here is the flash 8 code;

id = _parent.id;

All this code is doing is setting the variable id equal to _parent.id. _parent.id is defined in an .asp page that contains the .swf.

So really what I need to do is load the variable id from the hosting page… I cannot do it with a URLRequest/URLVariables/URLLoader because the url is a reset password page and it changes per user. I have also tried using id = stage.id or root.id or parent.id none of those work either.