Hello, XenForo Community! I've used search, I've used Google, I've looked into the HTML, I've looked at the php files, and I just can't seem to figure out how to change the type of transaction XenForo makes with PayPal for purchasing a user upgrade. I'd like it so that when a user purchases an upgrade that it be flagged as a donation to PayPal, to avoid merchant fees that shouldn't exist as it isn't actually a 'purchase'. As far as I can tell, I can generate the proper links by creating donation flagged donor buttons through PayPal, but I can't figured out how to hook them into the User Upgrade system. Any help regarding this would be greatly appreciated.