Label data output in summary and annotation

Hi all. When creating an alert rule, a metric (for example, node_load5) is calculated for several servers at once. Is it possible to display in a message in Telegram the name of the server on which the alert is triggered? If you write {{$labels.server_name}} in the summary, then notifications to the bot’s telegrams stop coming. Thanks in advance for your reply.

you can try to use {{ .Labels.server_name }}