Why does this flicker like its glitched?

This script is not working too well, anyone know how to fix?

local Players = game:GetService("Players")
local Player = Players.LocalPlayer
local PlayerGui = Player:WaitForChild("PlayerGui")
local Gui = PlayerGui.Inv
local Test1 = script.Parent

Test1.MouseEnter:Connect(function()
    Test1.Visible = false
end)

Test1.MouseLeave:Connect(function()
    Test1.Visible = true
end)

You are setting the values wrongly!

local Players = game:GetService("Players")
local Player = Players.LocalPlayer
local PlayerGui = Player:WaitForChild("PlayerGui")
local Gui = PlayerGui.Inv
local Test1 = script.Parent

Test1.MouseEnter:Connect(function()
    Test1.Visible = true
end)

Test1.MouseLeave:Connect(function()
    Test1.Visible = false
end)

If this helped, mark this as answered :p