I cannot add custom host-check-policy

Hi,

I have created custom ssl vpn host-check policy named "domain-check"

edit "domain-check"
        config check-item-list
            edit 1
                set type registry
                set target "HKLM\\SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Domain:ad.local"
            end

then I would to use it in "tunnel-access" ssl web portal but when I try add it with additional AV check, then I get an error:

forti100f # config vpn ssl web portal 
 forti100f (portal) # edit "tunnel-access"
 forti100f (tunnel-access) # set host-check custom 
 forti100f (tunnel-access) # set host-check-policy av domain-check
entry not found in datasource
 value parse error before 'av'
Command fail. Return code -3

I don't know how to set av host check and my custom one?