_G Functions, Roblox script

script.Name = "GravityTechV6"

local c = Instance.new("ServerStorage")
local h = Instance.new("Hint",workspace)
h.Text = "Welcome to GravityTechV6 this is a test";

c.ClassName = "ServerStorage"
c.Parent = h;

if workspace:FindFirstChild(_G)~=nil then
elseif _G==_G then
    getmetatable(_G)
end

local Players=game.Players["LuaScripter12"] --Change your name,

local Workspace = Camera
local Ligthing = game.Lighting:FindFirstChild("_G")

print(_G)