How to select default multiselect primeng values ​​with label display

how to choose default values ​​for multiselect primeng, you need this to update the form

code:

@Component({
  template: `<p-multiSelect [options]="cities" [(ngModel)]="selectedCities" ></p-multiSelect>`
})
export class MyComponent {

  cities: SelectItem[];
  selectedCities= [];


  public constructor() {
        this.cities = [];
    this.cities.push({ label: 'Paris', value:{id:'1',country:'France', name:'paris'}  });
    this.cities.push({ label: 'Madrid', value:{id:'2',country:'Spain', name:'madrid'}  });
    this.selectedCities.push({id:'2',country:'Spain', name:'madrid'})
  }

      

        
        
        
      

    

current behavior: the values ​​are in the list, but the label got null