Character not teleporting to saved position?

I have a string value that takes my last known position and changes it with tostring(). When I join back, that value is exactly the same, showing that it saves correctly.

When I leave

p.CharacterRemoving:Connect(function(char)
    local lastPos = tostring(char.HumanoidRootPart.Position)
    StringModel.CharacterPosition.Value = lastPos
    print(StringModel.CharacterPosition.Value)
end)

When I join

p.CharacterAdded:Connect(function(char)
    if Spawned[p.Name].Spawned == false then --If first spawn
        local newPos = Vector3.new(tonumber(StringModel.CharacterPosition.Value))
        print(newPos) --last position is correct
        p.Character.HumanoidRootPart.CFrame = CFrame.new(newPos)
        --^ not working. i still spawn in the same old spot
        print("Teleported")
        Spawned[p.Name].Spawned = true
    end     
end)

I do not have a spawnlocation to conflict, not sure whats going on.