Interface not present in "incoming interface", I can't add rules

I have  a wifi interface with the following config:

edit "WifiNAME"
 set vdom "root"
 set ssid "NAME"
 set security captive-portal
 set portal-message-override-group "captive-portal-WIFINAME"
 set selected-usergroups "GROUP_SSL_VPN"
 set intra-vap-privacy enable
 set local-switching disable
 next

But this is the only with that I can't use to create firewall rules (neither from web nor from CLI), apparently there's nothing wrong with this interface, but  still doesn't work.

Trying to specify manually the interface name from CLI shows me an error

node_check_object fail! for name WifiNAME

value parse error before 'WifiNAME'

Command fail. Return code -651

Any ideas on how to proceed?