FR24 Wildcard Alerts

[stml]

Hello - wondering if it's possible to set up wildcard alerts? There are various types of reg which don't appear in the airline listings but have consistent flight numbers - e.g. Google's High Altitude Balloons - some of them appear with reg "Google" (http://www.flightradar24.com/reg/google) but wondering if something like HBAL* (where * is a wildcard) would pick up more?