Schedule.dart

import 'package:flutter/foundation.dart';

class MySchedule extends ChangeNotifier {

  double _stateManagementValue = 0;
  
  double get stateManagementValue => _stateManagementValue;
  
  set stateManagementValue(double value) {
    _stateManagementValue = value;
    notifyListeners();
  }

}