TextLabel appear when player enter gui?

Here the SCRIPT:

local plr = game.Players.LocalPlayer
local mouse = plr:GetMouse()
local entered = false

script.Parent.MouseEnter:connect(function()
    entered = true
    script.Parent.TextLabel.Visible = true
end)

script.Parent.MouseLeave:connect(function()
    entered = false
    script.Parent.TextLabel.Visible = false
end)

mouse.Move:connect(function()
    if entered then
        script.Parent.TextLabel.Position = UDim2.new(0,mouse.X,0,mouse.Y)
    end
end)

Why the Text Label not appear when i enter(or hover the Gui), help!

P/s : I'm not an ENGLISH expert so sorry if you don't understand ^_^