Renders the value of a specific event property - immediately.
track
events - immediately. This is in contrast to standard segments whose values are calculated with a delay.
This user property also differs from the standard performed user property, in that it is only calculated on a forward-looking basis, from the time the parent event entry journey was first triggered.
This is an advanced feature that should be used by experienced users.
Use cases include:
appointmentId
as the key to route this event to event entry journey instances keyed on that appointment id.