Alternatively, you can do this via the commandline in the SSID profile:
(ArubaMM-VA) *[LABControllers]# config t
(ArubaMM-VA) *[LABControllers]#wlan ssid-profile CatchMe
(ArubaMM-VA) *[LABControllers] (SSID Profile "CatchMe") #opmode wpa2-aes wpa-aes