Yes, I need such kind of node as well. I want an event fire once a boolean value change. Because I put this bool in a class BP and referenced it in many other class BP, I got several “place” which would change this bool vaule. If I need to fire an event when this bool value change I need to put an event node on each “place”. If I have a node called “fire on value change”, then I only need to put one node on on BP. Or I have to use per tick event to detect bool change.