Why won't this give the player the item when they buy the gamepass?

market = game:GetService("MarketplaceService")

local marketPlace = game:GetService("MarketplaceService")
marketPlace.ProcessReceipt = function(receipt)
	player = game.Players:GetPlayerByUserId(receipt.PlayerId)
	if receipt.CurrencySpent == 300 then
		--gravity
		if true then
			return Enum.ProductPurchaseDecision.PurchaseGranted
		end
   		game.ServerStorage.GravityCoil:Clone().Parent = player:WaitForChild("Backpack")
	elseif receipt.CurrencySpent == 1 then
		if true then
			return Enum.ProductPurchaseDecision.PurchaseGranted
		end
    	game.ServerStorage["Acceleration Coil"]:Clone().Parent = player:WaitForChild("Backpack")
		--speed
	end
end

Thanks!! This worked.

market = game:GetService("MarketplaceService")
market.PromptGamePassPurchaseFinished:Connect(function(player, gamepass, purchase)
	if purchase == true then
		--gravity
		if gamepass == 6632153 then
   		game.ServerStorage.GravityCoil:Clone().Parent = player.Backpack
		elseif gamepass == 6632270 then
    	game.ServerStorage["Acceleration Coil"]:Clone().Parent = player.Backpack
		--speed
		end
	end
end)