clickTAG question

I know nothing of clickTAG and everything I’ve searched for on the internet on this topic seems to be the exact same thing but I can’t get it to work for some reason.

Near as I can tell–in its simplest form–I need the AS for a button in the movie:

on (release) {
getURL(_root.clickTag, "_blank");
}

Then in the page, within the *<EMBED src=… *section I need:

"myFlashMovie.swf?clickTAG=www.bbc.co.uk"

However, this simply does not work. I know the code is getting through because I’ve indicated that I want it in a new blank window and one shows up. The problem is that it shows up as “undefined” as if it can’t read the address.

What am I missing? Also, does it matter that it is in an .asp page instead of an HTML page?