local function object()
	local obj = {}
	local variable1 = 5
	local variable2 = "Hello John!"

	local mt = {
		-- get a value from this object
		__index = function(obj, name)
			if name=="variable1" then
				return variable1
			elseif name=="variable2" then
				return variable2
			end
		end,
		
		__newindex = function(obj, name, value)
			if name=="variable1" then
				variable1 = value
			elseif name=="variable2" then
				variable2 = value
			end
		end,
	}

	setmetatable(obj, mt)
	return obj
end

local o1 = object()
print(o1.variable1, o1.variable2)
o1.variable1 = 100
o1.variable2 = "Hi!"
print(o1.variable1, o1.variable2)