why does the gui not move to my mouse's position?

i have a script where when you position your mouse over any part that is lootable, it brings a textlabel to your mouse's position, and displays the name of the part. but for some reason it's not working. the script is located inside of a screengui. here is my script:

local plr = script.Parent.Parent.Parent
local Char = plr.Character
local label = script.Parent.TextLabel
local mouse = plr:GetMouse()
local Lootables = {"Small Stone", "Large Stone", "Gold"}

mouse.Move:connect(function()
    if mouse.Target.Name == Lootables then
    print(mouse.Target.Name)
    label.Text = mouse.Target.Name
    label.Position = UDim2.new(0,mouse.X,0,mouse.Y)
    end
end)

I think the problem is in line 8.