When changing something in a Portlet it is often necessary to start a certain event – recalculation, initializing of a solution runner.
Event Handling in Portlet Designer
"Change Events" will open a new window.
Change Events
There events can be managed. Choose an event type for the portlet and then the project and the node which such be recalculated. If there are more than on event, the sequence of the events can be chosen.