How do I trigger an event on a third-party sale?

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#1

I’ve already tried using ms.PromptPurchaseFinished but this does not seem to work.

What I want it to do is trigger an event if a player bought a third-party gamepass (like pls donate).

Thanks.

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#2

Try

game:GetService("MarketplaceService").ProcessReceipt = function(receipt)

end

It’s a bit of a weird since callbacks are so rare on roblox, but it’s structured this way in order to allow you to return a value (to determine whether or not the transaction reward was successful before charging the player’s account)
Here’s documentation on it

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#3

Isn’t that for DevProducts only?

#4

You need to enable third-party sales in the security tab of the studio

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#5

Don’t worry, I already did that…

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#6

In that case, you just need to insert the id of the third-party item inside the prompt purchase just like how you would buy gamepasses or dev products in your games
https://create.roblox.com/docs/production/monetization/game-passes

#7

I don’t want this event to trigger when a certain item is bought. I wan’t it to trigger every time a third-party item is bought.

#8

Have you tried the function I sent inside the link? You need to remove the comparison inside the prompt gamepass purchase. Should fire each time a gamepass is purchased. I personally never sold a third party gamepass, so I can’t confirm this will work

#9

What do you mean

??

and what do you mean with

#10

There’s a function in this link (Game Passes | Roblox Creator Documentation) that shows you how to trigger an event when a gamepass is purchased. Inside the example/function they provided is comparing to see if the gamepass purchased belong to a certain ID. You mentioned you want it to prompt each time regardless of the ID. So you need to remove the comparison of the ID. And as I said before, I haven’t tried this on third-party gamepasses before, so I cannot guaranteed this method will work. Let me know if this works though.

#11

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there is no comparison

#12

Did you check the link I sent?

#13

Yeah I did click the link but I couldn’t find anything

#14

Under “Prompting In-Experience Purchases” gives an example of a server-side prompt purchase function, the solution is in there. Try using that code in place of your current function

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#15

For some reason the function I’m using right now works whenever someone purchases one of my gamepasses, but it doesn’t work for third-party passes?!?

#16

Try using the code Roblox provides and see if that works for both in-game gamepasses and third-party gamepasses

#17

The PromptPurchase is done via a localscript in StarterGui. (executes when butten is pressed)

#18

Then try using the client-side script Roblox provides instead of the server-side script

#19

Yes, roblox uses different functions for different types of purchases. They’re eerily similar and the difference between them isn’t super well documented so you might have to just do a bit of trial and error, swapping functions until one runs when you buy a third party product.

#20

The purchase gets executed in a local script