PMM alert filter does not work

[Luke03011]

I use PMM 2.26.0 and integrated alerts and the alert is sent to slack as expected, but when I try to use filters with these alert rules, e.g.

It seems not working, alert with this service name is still sent to the slack channel. Is there anything I am missing here? Thanks.

[Vadim_Yalovets]

Hi Luke,

Could you make sure that service name was provided correctly?
On the latest PMM version you may check a used query and run it in explore.

e.g.

[Luke03011]

Thanks for your response, Yes, I am quite sure the service name is correct