SOLVED: Upvalue / Userdata value question?

Here is my code:

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local Speed = player.leaderstats:WaitForChild("Speed") or player.leaderstats.Speed

Speed.Changed:connect(function()
	character.Humanoid.Walkspeed = Speed + 1
end)

When I go into test and change the intvalue of speed on my player. it returns the error: Attempt to perform arithmetic on upvalue 'vitality' (a userdata value)

I have this script in starterplayer script.

the "speed" is a intvalue located in a leaderstats folder in the localplayer directory

I have tried adding wait() to see if it would catch it but nothing seems to work

what should I do?