local t1 = {}

local s_t = {}

function func(o, k, v)
	print(o, k, v)
	if t1[k] then
		print("error: msg define repeat! type:" .. k)
	end
	t1[k] = v
end
local m = {__newindex = func}
setmetatable(s_t, m)


s_t.name = "test"
s_t.name = 2

print(t1.name)

os.execute("PAUSE")