Windows Service Monitoring

Trigger if the service has 3 times a "wrong" status

Exmaple: You monitor a Zabbix Item, in this examaple the FailoverCluster-Service (service.info[ClusSvc]) with an interval of 30secs.
You want to trigger if the last 3 values are not "0" but if the service does not exists then trigger should not start/alert (because of Nodes that are not in a cluster).
The Zabbix Template "Compute_Hyper-V" are linked to the Hyper-V Nodes.

Value 0 means the Windows Service is running.
Value 255 means Zabbix find no Windows Service with this name (No such service).

Mostly incorrectly configured (misconceived) Zabbix Trigger expression:

({Compute_Hyper-V:service.info[ClusSvc].last(3)}<>0) and ({Compute_Hyper-V:service.info[ClusSvc].last(3)}<>255)

-> This is not working correctly.

Correct configuration would be

({Compute_Hyper-V:service.info[ClusSvc].count(#3,0)}=0) and ({Compute_Hyper-V:service.info[ClusSvc].count(#3,255)}=0)