Radio list: returning only one selected value

@Ditister wrote:

I create a radio-list with this code:

         <ion-list radio-group>
              <ion-item *ngFor="let su of selectuser | async">
                  <ion-radio   [value]="su.name" detail-push (click)="saveSelect(su.name)"></ion-radio>
                  <ion-label > {{su.name}}  </ion-label>
              </ion-item>
          </ion-list>

This works fine. If I click an item, the value returns.

Now I will modify this list/code by adding a button. Only by clicking the Button the value should returns.
Maybe like this not working code:

       <ion-list radio-group>
              <ion-item *ngFor="let su of selectuser | async">
                  <ion-radio   [value]="su.name" ></ion-radio>
                  <ion-label > {{su.name}}  </ion-label>
              </ion-item>
          </ion-list>



          <button ion-button (click)="saveSelect(user)">Send</button>

Some Ideas?

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