refresh has been done
refresh has been done Hello World! Hi!

Unbound control is not relevant

This effect can be used to advantage when your data structure changes.

Controls will show up as needed if a some node can be bound during a refresh.

Hit the button and thereby change the underlying data by replacing them with some other data from second instance.

Note that the fx-trigger is bound to 'greeting'. After the data changed there's no greeting node any more it can bind to making the trigger non-relevant.