Clearing Downloads from Specific Sites

Hi: I'm looking to have Hazel keep my Downloads folder tidy.
I regularly download videos from a web site. What I'm trying to do is, after a fews days, send the old videos to the Trash. My rule is predicated on 3 conditions. Does the file have an mp4 extension, was it created more than a couple days ago, and did it come for a specific web site.
No problem with the first two conditions, but I can't figure out how to do the third.
I noticed in File | Get Info that the videos have a "Where from" attribute that's filled in with a long URL (actually it looks like 2 URLs), so I tried telling Hazel to use "Where from" "Contains match" and just typed in the base web site name (i.e., www.xxx.com"), but in testing the rule I can't get it to match.
Any advice is very much appreciated. Thank you!
I regularly download videos from a web site. What I'm trying to do is, after a fews days, send the old videos to the Trash. My rule is predicated on 3 conditions. Does the file have an mp4 extension, was it created more than a couple days ago, and did it come for a specific web site.
No problem with the first two conditions, but I can't figure out how to do the third.
I noticed in File | Get Info that the videos have a "Where from" attribute that's filled in with a long URL (actually it looks like 2 URLs), so I tried telling Hazel to use "Where from" "Contains match" and just typed in the base web site name (i.e., www.xxx.com"), but in testing the rule I can't get it to match.
Any advice is very much appreciated. Thank you!