How do you make a gamepass give players a tool?

So, I have a gamepass for a segway and I have the tool. I tried creating a script so when the player joins, if they have the specified gamepass then they will be given the segway. This is what I tried:

local MarketPlaceService = game:GetService("MarketplaceService")
local GamepassId = 6547079

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function()
        if MarketPlaceService:UserOwnsGamePassAsync(player.userId, GamepassId) then
            script.HandlessSegway:Clone().Parent = player.Backpack
        end
    end)
end)

However, during testing this did not work.