Why my MIB SSID and Frequency dosent work ?

[admin@xxxxxxxxxxxx] > interface wireless print oid
Flags: X - disabled, R - running
0 R tx-rate=.1.3.6.1.4.1.14988.1.1.1.1.1.2.4
rx-rate=.1.3.6.1.4.1.14988.1.1.1.1.1.3.4
strength=.1.3.6.1.4.1.14988.1.1.1.1.1.4.4
ssid=.1.3.6.1.4.1.14988.1.1.1.1.1.5.4
bssid=.1.3.6.1.4.1.14988.1.1.1.1.1.6.4
frequency=.1.3.6.1.4.1.14988.1.1.1.1.1.7.4

root@xxxxxx:~# snmpwalk -c public -v 1 my_IP .1.3.6.1.4.1.14988.1.1.1.1.1.5.4
root@xxxxxx:~#

root@xxxxxx:~# snmpwalk -c public -v 1 my_IP .1.3.6.1.4.1.14988.1.1.1.1.1.7.4
root@xxxxxx:~#

Other MIB like sysUptime work OK.
Any sugesstion ?

Note, that this sections OIDs are designed for client interfaces, use 'registration-table' oids to monitor access point.

So is there any chance to receive SSID and frequency from mikrotik using SNMP ?

Thanks

registration-table provides values,
strength=
tx-bytes=
rx-bytes=
tx-packets=
rx-packets=
tx-rate=
rx-rate=