Discovery of sysObjectID doesn't work

When I create a SNMP discovery rule to get the sysObjectID.0 of hosts nothing is displayed in Monitoring->Discovery. There is no column called sysObjectID.0. Thus I also cannot create discovery actions based on that data.

I can get sysName.0 with SNMP without problems.

Perhaps the cause might be that the sysObjectID.0 is of type OID, not of type string.