After more research I've found that the Application API does support both "pressed" and "released" triggers.
Additionally the basic "button" element also supports a "released" trigger.
I assumed that the RapidIoT "User Buttons" would have been built upon the basic "Button" element and I was wrong!
Is there a good reason the "User Buttons" element does not provide released triggers?
Is there a way to create an fully compatible "User Buttons" element alternative that does support the released triggers?
Is there a concept of a combined element that contains two or more basic elements? User Buttons = 4 buttons