Fortigate VDOMs monitoring

Is there any way to monitor multiple Fortigate VDOMs? I tried to use distinct hostnames for different vdoms but still get same error in Orion:

Already got device with SNMP-read sysName (XXXXX) and 'snmpEngineID' = 123456 (XXXXX).

is there any way to avoid this?

There is a possibility to query every VDOM by its community name:

• <communityname>-<VDOM1_Name>
• <communityname>-<VDOM2_Name>
• <communityname>-<VDOM3_Name>

.....

But I cant add vdoms as separate hosts because I get duplicate error

https://kb.fortinet.com/kb/documentLink.do?externalID=FD45872