I can't get my script to PromptGamepassPurchase, why?

I've tried rewriting this simple code several times, but nothing seems to work? I made sure that ClickDetector is in the correct place, so that isn't the issue. Please help D:

local id = 7550879 

script.Parent.ClickDetector.MouseClick:connect(function(player)
	game:GetService("MarketplaceService"):PromptGamepassPurchase(player, id)
end)