Get selected value of ion-radio-group tag in ionic 4


#1

I have a code in below :

<ion-item>
    <ion-radio-group [value]="profileItem.Sex" [(ngModel)]="profileItem.Sex">
      <ion-label class="input-label">{{ 'GENDER' | translate }}</ion-label>
      <div style="display: flex;">
        <span *ngFor="let genderType of genderTypeList">
          <span>{{genderType.title}}</span>
          <ion-radio [disabled]="profileItem.id" [value]="genderType.value"></ion-radio>
        </span>
      </div>
    </ion-radio-group>
</ion-item>

but can not get selected value in profileItem.Sex.
profileItem.Sex not changed.
how to get selected value in ion-radio-group tag ?