Guys can't set the value of frame visibility to true?

script.Parent.Touched:connect(function(p)
	if p.Parent.Name == "MainKey" then
		local door = script.Parent.Parent.Door1
		local handle = script.Parent
		local door2 = script.Parent.Parent.Door2
		local handle2 = script.Parent.Parent.Handle2
		door.Transparency = 1
		door.CanCollide = false
		handle.Transparency = 1
		door2.Transparency = 0
		door2.CanCollide = true
		handle2.Transparency = 0
		wait(1)
		door.Transparency = 0
		door.CanCollide = true
		handle.Transparency = 0
		door2.Transparency = 1
		door2.CanCollide = false
		handle2.Transparency = 1
		else
			game.StarterGui.DoorGUI.Instructions.Visible = true
	end
end)

I've tried this

script.Parent.Touched:connect(function(p)
	if p.Parent.Name == "MainKey" then
		local door = script.Parent.Parent.Door1
		local handle = script.Parent
		local door2 = script.Parent.Parent.Door2
		local handle2 = script.Parent.Parent.Handle2
		door.Transparency = 1
		door.CanCollide = false
		handle.Transparency = 1
		door2.Transparency = 0
		door2.CanCollide = true
		handle2.Transparency = 0
		wait(1)
		door.Transparency = 0
		door.CanCollide = true
		handle.Transparency = 0
		door2.Transparency = 1
		door2.CanCollide = false
		handle2.Transparency = 1
		elseif p.Parent.Name ~= "MainKey" then
			game.StarterGui.DoorGUI.Instructions.Visible = true
	end
end)

I've also tried this

local Instructionsss = game.StarterGui.DoorGUI.Instructions
script.Parent.Touched:connect(function(p)
	if p.Parent.Name == "MainKey" then
		local door = script.Parent.Parent.Door1
		local handle = script.Parent
		local door2 = script.Parent.Parent.Door2
		local handle2 = script.Parent.Parent.Handle2
		door.Transparency = 1
		door.CanCollide = false
		handle.Transparency = 1
		door2.Transparency = 0
		door2.CanCollide = true
		handle2.Transparency = 0
		wait(1)
		door.Transparency = 0
		door.CanCollide = true
		handle.Transparency = 0
		door2.Transparency = 1
		door2.CanCollide = false
		handle2.Transparency = 1
		else
			instructionsss.Visible = true
	end
end)

I've also tried adding a repeat and until!

Guys any one that can answer this??

By the way the script is inside the part in workspace