You can capture element lifetimes using messages that are denoted as New or Delete message types. To do this, follow the steps below:
|1.||Double-click on a message within a Sequence diagram to display the Message Properties dialog.|
|2.||In the Lifecycle field, click on the drop-down arrow and select New or Delete.|
|3.||Click on the OK button to save the changes.|
The example below shows two elements that have specific creation and deletion times.
Note: To show the termination X on the lifeline in the example below, you must switch on garbage collection: Tools | Options | Diagram | Sequence | Garbage Collect.