Template dimension in annotation

Grafana Alerting
,
1

Let’s say that I have alert like this:

...
    annotations = {
      "description" = "{{ with $values }} Number of evictions is above the threshold of 80: {{ humanize $values.B.Value }} {{ end }}"
    }
    labels = {
      "env" = var.env
      "instance" = "Redis Cache Node"
    }
    is_paused = false
    data {
      ref_id     = "A"
      query_type = ""
      relative_time_range {
        from = 1800
        to   = 0
      }
      datasource_uid = grafana_data_source.cloudwatch.uid
      model = jsonencode({
        dimensions = {
          CacheClusterId = "*"
        }
...

Is there any way to template CacheClusterId value for cluster that triggered an alert into: instance label value or even better into description annotation?
Expressions are Reduce and Math