Hotspot Max Session Time

Hi!

Is it possible to set up in the Mikrotik that a Hotspot-sessions should last maximum 30 minutes?
So that the user has to re-login to continue after 30 minutes.
It is not possible to set this in the RADIUS-server that we use, so the question is if the Mikrotik can do this.

If it is not possible directly, is it possible to do such things by scripting in the Mikrotik?

http://wiki.mikrotik.com/wiki/Hotspot

Under, /ip hotspot user profile, look at session-timeout.