Hello! Everytime i leave my game and rejoin, my money get doubled. Can Someone help me? here's my script

game.Players.PlayerAdded:Connect(function(player)

local marketservice = game:GetService("MarketplaceService")

local can = true
repeat wait() until player:FindFirstChild("leaderstats")
local leader = player:FindFirstChild("leaderstats")
if leader then
	repeat wait() until leader:FindFirstChild(script:WaitForChild("Currency").Value)
	local currency = leader:FindFirstChild(script:WaitForChild("Currency").Value)
	if currency then
		local folder = Instance.new("Folder",player)
		folder.Name = "2xGamepass"
		local oldmoney = Instance.new("IntValue",folder)
		oldmoney.Name = "OldMoney"
		oldmoney.Value = currency.Value
		local give2x = Instance.new("IntValue",folder)
		give2x.Name = "Give2x"
		give2x.Value = 0

		currency.Changed:Connect(function()
			if marketservice:UserOwnsGamePassAsync(player.UserId, script:WaitForChild("GamepassId").Value) then


				if can == true then
					can = false
					if currency.Value > oldmoney.Value then
						give2x.Value = currency.Value - oldmoney.Value

						currency.Value = currency.Value + give2x.Value

						oldmoney.Value = currency.Value
						can = true
					else

						oldmoney.Value = currency.Value
						can = true


					end

				end
			else
				oldmoney.Value = currency.Value
			end
		end)

	end
end

end)

Anonymous