I'm trying to create an alert which polls the CPU utilization of some Palo Alto PA-5000 firewalls. As you can see in the image below, I'm using the correct OID for polling the CPU utilization.

Based on the values in the second column (which is the CPU utilization in percentage) I'm trying to create an advanced alert:

Based on these conditions, an e-mail should be send whenever the CPU utilization of the firewall rises above 0% (for testing purposes). However, for some reason this alert is never triggered.
What am I doing wrong here?
Thanks
Daan