Can not show label or custom template in alert

Hi!
I use Grafana 9’s alert,
I’m trying to set up an alert that finds relevant information about which instance is causing the alert. I add some items in the summery, but it still doesn’t show the value.


result:

I also used the template to solve the problem, but the problem still exists
Annotations:

  • summary = {{ template “mytemplate” . }}