the Password Door GUI script isn't working?

So basically, it works fine in studio but in-game it doesn't even work, the GUI buttons aren't responding at all, the Exit Button won't close the GUI, and the enter button won't activate.

plr = game.Players.LocalPlayer
char = plr.Character

script.Parent.Exit.MouseButton1Click:connect(function()
    script.Parent.Visible = false
end)

script.Parent.Enter.MouseButton1Click:connect(function()
if script.Parent.PassBox.Text == "DarkZalSkull" then
    script.Parent.PassBox.Text = "Checking."
    wait(0.2)
    script.Parent.PassBox.Text = "Checking.."
    wait(0.2)
    script.Parent.PassBox.Text = "Checking..."
    wait(0.2)
    script.Parent.PassBox.Text = "Access Granted!"
    script.Parent.PassBox.TextColor3 = Color3.new(42, 213, 15)
    game.Workspace.PassDoor.Transparency = 1
    game.Workspace.PassDoor.CanCollide = false
    wait(2)
    game.Workspace.PassDoor.CanCollide = true
    game.Workspace.PassDoor.Transparency = 0.2
    script.Parent.Visible = false
else
    script.Parent.PassBox.Text = "Checking."
    wait(0.2)
    script.Parent.PassBox.Text = "Checking.."
    wait(0.2)
    script.Parent.PassBox.Text = "Checking..."
    wait(0.2)
    script.Parent.PassBox.Text = "Access DENIED"
    char.Humanoid.MaxHealth = 0
    char.Humanoid.Health = 0
end
end)