def proxy_writer(key, *args)
      meth = "#{key}="
      if self.respond_to? meth
        self.send(meth, *args)
      else
        object.send(meth, *args)
      end
    end
def proxy_writer(key, *args)
      meth = "#{key}="
      if self.respond_to? meth
        self.send(meth, *args)
      else
        object.send(meth, *args)
      end
    end
Proxy the writer to zie object.