Custom template notification for webex

Hi,
i’m searching to write a custom template notification for webex contact points but i cannot retrieve values.

 Stato: {{ if eq .Status "firing" }}🔴 FIRING{{ else }}✅ RISOLTO{{ end }}
Alert: {{ .GroupLabels.alertname }}

{{ range .Alerts }}--- Alert Details ---
Descrizione: {{ .Labels.alertname }}
Valore: {{ .Value }}
Inizio: {{ .StartsAt.Format "15:04:05" }}
{{ if .EndsAt }}Fine: {{ .EndsAt.Format "15:04:05" }}{{ end }}

🔗 Dashboard: {{ .GeneratorURL }}
{{ if .Annotations.runbook_url }}📖 Runbook: {{ .Annotations.runbook_url }}{{ end }}
{{ end }}

what are field for value?
Thanks