we are using NG-SELECT trying a create multiple forms with drop-down , we are trying to update the value of all dropdowns when one of the dropdown is updated but unable to find the correct node or configuration option to set it.

//reusable-form.component.ts
.. some inputs here
<ng-select 
      [searchable]="false"
      [clearable]="false"
      [(ngModel)]="selectedOption"
      placeholder="search"
      (change)="onSelect($event)"
    >
      <ng-option *ngFor="let data of datas; trackBy:userByName" [value]="data.name">{{
        data.name
      }}</ng-option>
    </ng-select>
 

we tried setting the option on change event as below, but the values are updated on rest of the drop-downs

onSelect(event){
this.selectedOption = event ; // even though model already has the value in it
this.cdref.detectchanges();
}