i'm using ionic 5 and angular, i tried to use ion-checkbox and the model target is an array:

```
user_id: any = [] // the model to target
user: any // data that filled from request api to be use on ngFor

```

on my html i use it like this:

```html
<ion-checkbox [(ngModel)]="user_id" value="{{ user.id }}"></ion-checkbox>

```

but this make the all checkbox checked and unchecked at the same time.