I have this code in my app :

Template :

```
  <ng-container ng-if="cpt < 3">
    {{cpt}}
    <button pButton type="button" (click)="incrementCpt()" label="+"></button>
  </ng-container>

```

Component :

```
public cpt: number = 0;
...
  incrementCpt() {
    this.cpt++;
  }

```

But the button is never hidden. I don't understand why?