Update README.md

Author: twinrbx

README.md

@@ -21,7 +21,7 @@ DevForum thread: https://devforum.roblox.com/t/quick-donation-board-monetize-in-
 - The fifth setting is `DONATION_OPTIONS`. Using the developer products that you made earlier, fill in the amount of robux it costs and the product ID for each option. The board only has room to display five options.
 
 ## Warnings
-- If you set the `MarketplaceService.ProcessReceipt` function anywhere else in the game (you likely do if you have other developer products), you will have to manually connect the functions yourself. This can be done in the form of a `BindableEvent`, where it will fire to the Core script upon purchase and the Core script will return a boolean signal: `true` if it found a donation with that ID and `false` if it did not.
+- If you set the `MarketplaceService.ProcessReceipt` function anywhere else in the game (you likely do if you have other developer products), you will have to manually connect the functions yourself. This can be done in the form of a `BindableEvent`, where it will fire to the Core script upon purchase and the Core script will return a boolean signal: `true` if it found a donation with that ID and successfully granted the donation or `false` if it did not find a donation with that ID or errored when trying to grant the donation. If it returns true, you can retirn `Enum.PromptPurchaseDecision.PurchaseGranted` to the `ProcessReceipt` function.
 - This board will not work in Roblox Studio unless you have "Enable studio access to API services" enabled under game settings.
 - This board will not work in unpublished places.