Can Slides zoom function work?

Ionic Framework ionic-v3
1

I use the latest version,but the function don’t work!

<ion-content>
  <ion-slides [pager]='true' [zoom]='true' style="background-color:black" >
    <ion-slide >
      <img src="assets/img/1.jpg">
    </ion-slide>
    <ion-slide >
      <img src="assets/img/2.jpg">
    </ion-slide>
    <ion-slide >
      <img src="assets/img/3.jpg">
    </ion-slide>
  </ion-slides>
</ion-content>
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