Am I missing something important? nothing in the output comes up, nothing in the new output they just updated. Help?

--SET UP VARIABLES--

local MarketPlace = game:GetService("MarketplaceService")
local Datastore = game:GetService("DataStoreService"):GetDataStore("PurchaseHistory")
DamageID = 19312506

--------------------

script.Parent.MouseButton1Down:connect(function()
MarketPlace.ProcessReceipt = function(receiptinfo)
	for i, player in ipairs(game.Players:GetChildren()) do
		if player.userId == receiptinfo.PlayerId then
			
			if receiptinfo.ProductId == DamageID then
				player.Character.Humanoid.Health = player.Character.Humanoid.Health - 20
				script.Parent.Text = player.Name .. " has bought death ! "
			end
		end
	end
	local productplayerkey = "player_" .. receiptinfo.PlayerId .. "_purchase_" .. receiptinfo.PurchaseId
	DataStore:IncrementAsync(productplayerkey, 1)
	
	return Enum.ProductPurchaseDecision.PurchaseGranted
end
end)
Anonymous