Still broken in Widget PREVIEW (Xcode 16.4), but works in SIMULATOR (iphone 16 on 18.5).

Signing Certificate access was blocked a day before License expired.

I wish Apple would test their code before presenting at a conference. I added a name state variable for the TextField. @State private var name: String = "" ... .sheet(item: $donutToAdd) { _ in TextField("Name", text: $name) .padding(10) .overlay( RoundedRectangle(cornerRadius: 20) .stroke(Color.black) ) Button("Save") { if let donutToAdd { donutToAdd.name = name donutList.donuts.append(donutToAdd ) self.donutToAdd = nil self.name = "" } } Button("Cancel") { self.donutToAdd = nil } } code-block And DonutList needs to be a class (else you get a mutating member on immutable value). @Observable class DonutList { var donuts: [Donut] init(donuts: [Donut]) { self.donuts = donuts } } code-block

"Reset Development Environment" will delete ALL your Records and your Custom Zones. Did you add an index to your RecordType using the console? "Add Basic Index" > make "recordName" QUERYABLE. The reset will delete your indexes

Cool