Hi I m not sure where to post this, but maybe the admin will move it in the right place. I would like to know what the best way to check if a user has made a payment to another user. I would like to create a little game in which players will have to pay a sum of money to another player when that certain player achieves something. If he doesn't pay, he will be punished :). How can I make sure that player 1 (let's say), pays player 2? I would like each player to create their own "donate" button, and have it in their profile. Is that possible? Thank you in advance.