How to store the query collections document in app state

Database & APIs

I have a list of events (dates, location, time etc) in firestore database. I want to fetch the query collections and convert the result in to List <DateTime> and store it in App State variable. How can I do this

What have you tried so far?

I am new to flutter flow and I tried putting in App State but it fails

Did you check FlutterFlow's Documentation for this topic?