CheckMK 2.0.0p5 - SNMPv3 - Contexts to use in requests

Hello,

apparently I just need to select the right plug-in under “Section name” but I tried all the snmp related ones without found the solution. Nobody can help me or encountered the same situation?
As wrote in the previous message, starting a snmpwalk from command line I get info from the device

OMD[mysite] :~$ snmpwalk -v3 -l authPriv -u USER-NAME -a SHA -A ‘PASSPHRASE’ -x AES -X ‘PASSPHRASE’ -n CONTEXT IP-ADDRESS

Thanks!