Hostname (from Forticlient) usable as address object?

The Forticlient installed on the clients provides the Fortigate with information such as device name, logged in user etc. via its telemertie. You can see this information for example in the Fortclient widget.

I was wondering if I can use this information in firewall policies. For example use the hostname as address object or even better the username (without using the FortiAuthenticator and without the FSSO AD Agent).

Has anyone already implemented something like this? If this is not possible, I must continue to go the way via DHCP reservation.

Thanks in advance!

martin