Hi kboughaba,
Yes, that is normal because event.detail.editors are generated by the SmartScheduler depending on properties and etc.
If you want to add a event listener (for example) to the item that you have added you can do it like in the code snippet that I have sent you in my
previous reply.
Also if you need more assistance do not hesitate to contact us!
Best regards,
Yavor Dashev
Smart UI Team