What customer are connected in a sector

hi to all

I have a NAS device where PPoe devices are connected via radius, from there I have 2 Mikrotik sectors (922UAGS-5HPacD) … My question is … how can I know how many clients (antennas) (SXTsq 5nD) I have connected in each sector?

Try to search in one of the sectors with the command ..

interface wireless registration-table print

But it shows nothing and there in theory there should be more than 10 clients.