[Just to be double sure] any errors with this script?

local Map1 = game.Lighting.Map1
while true do
	wait(420)
	if (game.Workspace.Map1 ~= nil) then
		game.Workspace.Map1:Destroy()
	end
	local M = Instance.new("Message", game.Workspace)
	M.Text = "Inserting Toxic Speed"
	wait(2)
	Map1:Clone().Parent = game.Workspace
	M:Remove()
	wait(1)
end

It's a Map Changing script, I couldn't find any errors in output, Can you? Thanks.