[Help] Script for update Dynamic hosts in address lists

Hi all. I have the following questions.

I have created a list called “access” in mailing lists, in which I have added 10 xxxxx.dyndns.org hosts and they have dynamic IP.

I would like to help me build a script that automatically update all hosts every 30 minutes for example.

Some time ago I saw a script on the internet did that, but I can not find it. This script took the name of the host from the host’s comments, and update the IP address.

Thank you very much.

http://forum.mikrotik.com/t/script-to-resolve-dns-names-and-update-address-list/11818/1

Thank you very much changeip