Event-based formula execute for each single event in an event notification. For an event-driven formula, the trigger contains an array of every object that changed, not only the object/data associated with the single execution. Event-triggered formulas have access to all events under , but the specific event that triggered this execution can be found under .
Using isolates the individual event that triggered the formula. You can then use the objectId inside to retrieve the specific object from the associated element API.
For more details on this, see the example formula in our Developer Community, Cloud Elements Open Labs (and read more about our community here).
