Reset a file's "Date Added" field?

Hi, sorry if this has been done to death....
Short Version: I need to reset a file's "Date Added" after a certain period of time. Obviously, there's no direct command in Hazel to do this, but I'm wondering if there's a workaround that doesn't involve AppleScript.
Long Version: I've got folders with Video files. I've got a set of rules that assign a Purple tag to any file that's been opened in the last 6 months, AND when "Date Last Opened" is after the "Date Added". That's working fine.
I've got a rule set that then removes the tag after 6 months. That part's working. This is where and when I also want to reset the Date Added. I've tried renaming (Name and extension. This works, but doesn't reset Date Added as I'd hoped). Also tried Copy (with the Replace Existing option) and Sync, to no avail. Damn.
Thanks for any clue you can toss my way....
Short Version: I need to reset a file's "Date Added" after a certain period of time. Obviously, there's no direct command in Hazel to do this, but I'm wondering if there's a workaround that doesn't involve AppleScript.
Long Version: I've got folders with Video files. I've got a set of rules that assign a Purple tag to any file that's been opened in the last 6 months, AND when "Date Last Opened" is after the "Date Added". That's working fine.
I've got a rule set that then removes the tag after 6 months. That part's working. This is where and when I also want to reset the Date Added. I've tried renaming (Name and extension. This works, but doesn't reset Date Added as I'd hoped). Also tried Copy (with the Replace Existing option) and Sync, to no avail. Damn.
Thanks for any clue you can toss my way....