Update Cora Data Object

I'm creating a new

xcdatamodeld

then, using it here to create new objects:

import SwiftUI

struct ContentView: View {
  
  // Anywhere you need to create Core Data objects you should add an @Environment property to ContentView to read the managed object context right out:
  @Environment(\.managedObjectContext) var managedObjectContext

  var body: some View {
  
  Button(action: {
  let language = ProgrammingLanguage(context: self.managedObjectContext)
  language.name = "Python"
  language.creator = "Guido van Rossum"
  
  // See whether your managed object context has any changes
  if self.managedObjectContext.hasChanges {
  // Save the context whenever is appropriate
  do {
  try self.managedObjectContext.save()
  } catch {
  // handle the Core Data error
  }
  }
  }) {
  Text("Insert example language")
  }
  }
}

How can I modify that object once created?

Thank you