Appointment widget + Conditional Logic possibility.

I'm using an appointment widget on a form. I'd like to set up so that when all of the options have been filled (no appointments left to choose), I can have a hidden field appear.

Is this possible using conditional logic? 

Unfortunately, it is not possible to do that with conditional logic since you cannot check the state of that field (if it's empty or not), you can only check if it is filled or not filled.

Widgets are very tricky when it comes to conditional logic since they operate in separate iFrame in a form.

We could forward this to our backend team for a possible implementation if you wish.

We'll wait for your response.

Thank you!