Updating core data entity with observedobject - core-data

Question

I have created a list of clients which get saved in core data. I added some attributes through an AddView and now I am trying to add a new attribute using a different view. In order to do that I understood I need to use the observedObject property wrapper so that it doesn't create a new client but update the existing one. This is the code:
import SwiftUI
import CoreData
struct TopicView: View {
#Environment(\.managedObjectContext) var managedObjectContext
#Environment (\.presentationMode) var presentationMode
#ObservedObject var topic: StudentData
#State var content = ""
#State private var show = false
#StateObject private var keyboard = Keyboard()
var body: some View {
Form{
Section (header: Text("Topics covered")
.bold()
.padding(.all)
.font(.title3)) {
TextEditor(text: Binding(
get: {self.topic.content ?? ""},
set: {self.topic.content = $0 } ))
.frame(height: 250)
}
}.onTapGesture {
hideKeyboard()
}
}
}
Button ("Submit")
{
self.topic.content = self.content
self.topic.objectWillChange.send()
try? self.managedObjectContext.save()
self.presentationMode.wrappedValue.dismiss()
}.foregroundColor(.white)
This is the view where the new attribute should be shown:
import SwiftUI
import CoreData
import MapKit
struct StudentView: View {
#Environment(\.managedObjectContext) var managedObjectContext
#FetchRequest(entity: StudentData.entity(),
sortDescriptors: [],
animation: .spring()) var content: FetchedResults<StudentData>
#Environment (\.presentationMode) var presentationMode
#ObservedObject var topic: StudentData
#State var showModalView = false
#State private var showingSheet = false
let myStudent: StudentData
var body: some View {
NavigationView {
VStack{
Text("Topics Covered")
.font(.system(size: 30, weight: .bold, design: .rounded))
.foregroundColor(.red)
.padding(.horizontal)
Text("\(myStudent.content ?? "")")
.font(.title2)
.bold()
.foregroundColor(.white)
.padding(.horizontal) }}
Spacer()
Spacer()
}.sheet(isPresented: $showModalView, content: {
TopicView(topic: topic)})
The problem is, if I type in the texteditor some text without save it then it shows correctly in the other view. However, when I save it, it does not show in the other view.
Is there anything wrong in my save code?