Variables in the description of the alert

Hello!
Please tell me, is it possible to use a variable (received as a result of a request) in the alert description?
In what format should a variable be specified?
I used $A - that doesn’t work.

Have you read through these?

If you are using Slack or Telegram, this will help:

Hello!
I managed to find a solution.
I use {{ $values.A }} and it works.