My Product handler wont work it didn't even print the Completed help?

local mps = game:GetService("MarketplaceService")


mps.ProcessReceipt = function(receiptInfo)
	if receiptInfo.ProductId == 1327541228 then -- Replace the id
		local player = game.Players:GetPlayerByUserId(receiptInfo.PlayerId)
		local Player = game.Players.FindFirstChild(player.Name)
		local Stats = Player:WaitForChild("leaderstats")
		local Donated = Stats.Donated
        
		Donated.Value = Donated.Value + 1000
		print("Completed")

        return Enum.ProductPurchaseDecision.PurchaseGranted
       
	elseif receiptInfo.ProductId == 1327541229 then -- Replace the id
		local player = game.Players:GetPlayerByUserId(receiptInfo.PlayerId)
		local Player = game.Players.FindFirstChild(player.Name)
		local Stats = Player:WaitForChild("leaderstats")
		local Donated = Stats.Donated
        
		Donated.Value = Donated.Value + 5000
		print("Completed")

        return Enum.ProductPurchaseDecision.PurchaseGranted
end
end