How to Monitor a Citrix ADC/Netscaler?

getting timeout if i run it manually :
snmpget -v2c -c public -m “” -M “” -On -OQ -Oe -Ot hostip.1.3.6.1.2.1.1.1.0
Timeout: No Response from hostip.

Also as i said after i added the rule about system OID i got the screenshots provided above.

I just dont get it, SNMP is active and working…

Do you normally just configure SNMP on a Netscaler and it “just” works, like most ofther SNMP Hosts in CheckMK?