Overview and Key Concepts

The sink is used to destroy flow items that are finished in the model. Once a flow item has traveled into a sink, it cannot be recovered. Any data collection involving flow items that are about to leave the model should be done either before the flow item enters the sink or in the sink's OnEntry trigger.

The sink is a fixed resource. Since it destroys all flow items it receives, the sink does not have any output logic.


For information on events, see the Event Listening page.

The sink uses some of the same standard events that are common to all fixed resources which include:

  • On Entry
  • On Message
  • Place Offset
  • Pull Strategy
  • Pull Requirement
  • On Stop
  • On Resume
  • On State Change
  • On State Value Change
  • On Input Change
  • On Draw

See Fixed Resources - Events for an explanation of these events.


The sink is always in the collecting state (unless the object is stopped and the state is set). Refer instead to its input statistics.


The sink tracks the following statistics. These can be viewed by clicking on the object and then viewing the Statistics panel in Properties.


The total number of items that have entered the sink.

Properties Panel

The Sink object uses the following properties panels:


The Sink object shares several properties with all fixed resources: