Gear giving script not erroring when a purchase is made?

The script below is not erroring or giving a gear of any sort. I have also printed after the 3rd line and if statement and did not receive a print in either part.

local gear = game:GetService("ServerStorage"):WaitForChild("HyperBike")

game:GetService("MarketplaceService").ProcessReceipt = function(receiptInfo)
	if receiptInfo.ProductId == 966352459 then
		local player = game:GetService("Players"):GetPlayerByUserId(receiptInfo.PlayerId)
		gear:Clone().Parent = player.Backpack
	end
	
	return Enum.ProductPurchaseDecision.PurchaseGranted
end

Good question!

First of all, make sure that the HyperBike is correct with casing, spelling, etc. Also, make sure it's a tool. It sounds stupid, but sometimes the most common errors get us!

If that doesn't work, try this:

local ServerStorage = game:GetService("ServerStorage")
local Gear = ServerStorage:WaitForChild("HyperBike")
local MPS = game:GetService("MarketplaceService")
local DevProductId = 966352459

MPS.ProcessReceipt = function(receipt)
	local ID = receipt.PlayerId.."-"..receipt.PurchaseId
	local player = game.Players:GetPlayerByUserId(receipt.PlayerId)
	if not player then
		return Enum.ProductPurchaseDecision.NotProcessedYet
	else
		if receipt.ProductId == DevProductId then
			local clone = Gear:Clone()
			clone.Parent = player.Backpack
		end		
	end
end