Gamepass door script not working anymore since Roblox changed the "storage system" for gamepasses?

So... I have an old gamepass door script, but since Roblox changed the "storage system" for gamepasses, the script and the gamepass id are not working anymore. Can someone help me out with changing the script so it does work? I've read the wiki, but I'm kinda confused now...

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ItemID = "" -- The ID of the Gamepass/T-Shirt.
OpenTime = 1 -- The time the door is open for.
OpenTrans = 1 -- The transparency of the door when it is open.
CloseTrans = 1 -- The transparency of the door when it is closed.
BuyGUI = true -- Set to false to stop the BuyGUI appearing.
KillOnTouch = true -- Set to false to stop players being killed when they touch it.

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Door = script.Parent
Serv = game:GetService("BadgeService")
MServ = game:GetService("MarketplaceService")
if not _G.Players then
	_G.Players = {[ItemID] = {}}
elseif not _G.Players[ItemID] then
	_G.Players[ItemID] = {}
end

Table = _G.Players[ItemID]

function CheckPlayer(player2)
	for i = 1,#Table do
		if Table[i] == player2 then
			return true
		end
	end
	return false
end

Door.Touched:connect(function(hit)
	if game.Players:GetPlayerFromCharacter(hit.Parent) then
		player = game.Players:GetPlayerFromCharacter(hit.Parent)
		if Serv:UserHasBadge(player.userId,ItemID) or CheckPlayer(player) then
			Door.CanCollide = false Door.Transparency = OpenTrans
			wait(OpenTime)
			Door.CanCollide = true Door.Transparency = CloseTrans
			else
			Door.CanCollide = true Door.Transparency = CloseTrans
			if BuyGUI == true then
				MServ:PromptGamePassPurchase(player,ItemID)
				h = player.Character:FindFirstChild("Humanoid")
				if h then
					h.WalkSpeed = 0 end
					local con
					con = MServ.PromptGamePassPurchaseFinished:connect(function(ply,asset,purch)
					if ply == player and asset == ItemID then
						con:disconnect()
						if purch then
							if h then
								h.WalkSpeed = 16 end
								table.insert(Table,player)
								elseif KillOnTouch == true then
								Door.CanCollide = true Door.Transparency = CloseTrans
								player.Character:BreakJoints()
							end
						end	
					end)
				elseif KillOnTouch == true then
				Door.CanCollide = true Door.Transparency = CloseTrans				
				player.Character:BreakJoints()
			end
		end
	end
end)