! Has anyone used AS3 with Google Adwords?!

I am having a big problem with some AS3 banner ads i created.
When uploading them into the google adwords system I get the error ‘Flash must support clickTAG’

I know what clickTAG is and how to implement it AS3 which I have done, but it still gives me this error.

Google says it supports as1-3 and you must build for Flash PLayer9 anyway.
My code is as such:

if (root.loaderInfo.parameters.clickTAG.substr(0,5)=="http:") {
                navigateToURL( 
                        new URLRequest(root.loaderInfo.parameters.clickTAG), 
                        "_blank" 
                      );
            }

Anyone please help!