How To Use Alert Message Templates in Grafana

Hi @melori.arellano i have gone through this doc for my alert it is unfortunate that im not able to get result from my alert can you help me out plz.

below i have provided details.

Here is my query preview

Screenshot from 2022-11-16 17-39-01

And here is the result im getting on slack
Screenshot from 2022-11-16 17-42-49

can you plz help.