How to check for empty title of calendar event in shortcuts?

Dear automators community,

I want to create a daily note from my work calendar events.
But all private events are shared to my phone with an empty title.
In the “Find Calendar Events”-action I can add a filter Title + is not but I have no idea how to input the empty string. If I leave it blank, it says “anything” (the placeholder) and all events are filtered.

I can use another if to filter afterwards, but I would be nice to know if it is possible with the “Find Calendar Events”-action.