No graph with Custom monitor

Hi,

With Net-snmp for Unix/Linux, you can define some key in snmp to have your own informations through the private mib of net-snmp
OID tree : .1.3.6.1.4.1.2021.xxxxxxxxxxxxxxxxx

I define a custom monitor with Opmanager

OID : .1.3.6.1.4.1.2021.8.1.101.18
MonitorName : testsnmp
Display Name : Test SNMP
Polling : 5
Units : test

After minutes, hours, days, It's not possible to have a graph.
With 'snmpwalk' I receive well the value but not through Opmanager

What's is wrong?? I've done a 'grep' through the log

- - - - - - - - - - - -
stdout19.txt:After Filling the data's : 10:52:05:165 AM PROP {severity=, message=Threshold violated, thresholdValue=, operation=, severityLists=[Ljava.lang.String;@161bec1, rearmValue=, name=testsnmp, severityListValues=[Ljava.lang.String;@328727, thresholdTypeValues=[Ljava.lang.String;@14720ee, timeAvg=, yaxisText=blocked, vendor=, type=node, sendClear=true, interval=5, graphName=testsnmp, failureThreshold=1, thresholdName=, oid=.1.3.6.1.4.1.2021.8.1.101.18, clrMessage=Threshold cleared, thresholdEnabled=false, thresholdTypes=[Ljava.lang.String;@c2ecfd, thresholdType=max, monitor=, clearThresholdType=min, displayName=test SNMP}
- - - - - - - - - - - -

that's all......

thank you for your help