TreeByNestingTableColumn question

I have followed the following tutorial, to create the TreeByNestingTableColumn:

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/tutorial on creating a tree structure in a table - 27.htm

Everything works fine, however, how can I trigger an event to the controller, when te user selects a row in the table.

I need to fire the event, and let the controller know the ID of the selected row.

Any Ideas on this?