Which statement is false about block events?

The statement that events can be defined at the block or screen level is indeed false. In OutSystems, events are specific to blocks, meaning that events are only defined within the blocks themselves and not at the screen level. While blocks can communicate with their parent screens using events, the actual definition and triggering of events must occur within the scope of the block.

The other statements highlight the correct functionality of block events. They clarify that events facilitate the passing of data from the block's context to its parent, which is a fundamental feature for maintaining clean architecture and enable communication between components. Furthermore, it is accurate that events are triggered by blocks and are meant to be handled in the parent scope, reinforcing the idea of hierarchical communication in modular application design. Additionally, it is true that multiple instances of a block can leverage the same event handler, which promotes reusability and consistency in the application's event management.