This will return how many wireless stations are registered against an AP
Hopefully somebody can use this, I think I borrowed some code from somewhere else, credit given where credit is due.
if(oid(“1.3.6.1.4.1.14988.1.1.4.4.0”)>0,concatenate(array_size(oid_column(“iso.org.dod.internet.private.enterprises.mikrotik.mikrotikExperimentalModule.mtXRouterOs.mtxrWireless.mtxrWlRtabTable.mtxrWlRtabEntry.mtxrWlRtabStrength”))," Wireless Clients"),“”)
Regards
Paul