Detecting that a specific calender event finished

i want to fire an automation when a certain all day event finished, I made the following trigger and condition using google calendar but I’m not sure it will work because I see that the message attribute switches to the next event when the state is off.

does anyone know how it behaves when the trigger is fired? will this work or should i put in the message attribute the next calendar event?

This does not exist at the moment but should be supported in the future by calendar triggers a work in progress.

actually it worked well