DynDNS on subdomain via Plesk

[Schupo]

Hi,
I'm trying to use a subdomain as a dynamic DNS redirection.

I read about DCP and some other hints on how to accomplish the desired, but I can't get it working properly.
Since alot are using Plesk I hope you can help me.

I want to use subdomain.domain.com as a redirection to my dynamic IP (which has to be updated after each router restart and new login).

Thx in advance.