Getting the selected value of a select by an event

Ionic Framework ionic-v3
1

Hello,

I have a setting page and I want to allow my users to change the app’s language.

How can i get the selected value of a <ion-select> please ?
I need something like an event.

Settings.html
`

      <ion-label>Langue</ion-label>

      <ion-select multiple="false" cancelText="{{'BUTTONS.CANCEL' | translate}}"
                  [(ngModel)]="userLang"
                  [alertOptions]="alertOptions">

        <ion-option *ngFor="#lang of availableLang" value="{{lang.short}}" [checked]="lang.short == userLang">{{lang.value}}</ion-option>

      </ion-select>

`

I tried with [change]="func(userLang)" like said here (go below) but I have a problem with that, that triggers my function several times in one click.
Do you have an alternative solution for me please ?