How to change the values ​​of options for ControlValueAccessor from the outside?

Question

Angular

I have a custom form control of the type select list:

export class BadgeFormControlComponent implements ControlValueAccessor {
}

Usage:

<app-badge-form-control [options]="selectedReglaments"   formControlName="reglamentid"></app-badge-form-control>

How to update the values ​​of options from the outside through the formGroup.control() itself: Of

[options]="selectedReglaments"

course, you can update the reference to the incoming selectedReglaments

[options]="selectedReglaments" variable - but you don’t want to create an extra selectedReglaments variable in the external component