For time-based alerts, cron expression describing the time at which to trigger the alert.
If this is set to a non-null value, the rule's AlertType will be changed to CronAlert automatically.
Namespace: StreamBase.LiveView.API.AlertsAssembly: StreamBase.LiveView.API (in StreamBase.LiveView.API.dll) Version: 2.2.1.3746 (2.2.1.3746)