Help Please: Relative URL for Google Adsense Rejected Ad Requests

[Carsafety]

Some of my ad placements have a very small percentage of rejected ad requests (less than 1%). The Google Adsense help page indicates most of these are due to placing the Adsense code within an iframe or third party ad manager. In my case, they are all directly placed on the page, so it is unusual, even if it is only a small number of rejected impressions.

https://support.google.com/adsense/bin/answer.py?hl=en&utm_medium=link&utm_campaign=ww-ww-et-asfe_&utm_source=aso&answer=2594855

The fix is to include a line of code in the Adsense tag script that tells the crawler where to find the content used to place the right ads. It is like this:

google_page_url = "http://myurl.com/fullpath";

I used a fixed page as the url, like my home page, and it seems to be resolving the problem with the rejected requests. Of course, the content of the home page may vary somewhat from the specific page where the ad is served, assuming it is a forum thread or post or something.

Is there a way to insert a dynamic vbulletin url link such that it sends the full path url of the current vbulletin thread page back to Adsense?

Thanks for any help!