I get the following error when trying to disable a ngx-select-ex selector: "
It looks like you're using the disabled attribute with a reactive form directive". I understand what the error message is saying, but is there anyway to programmatically disable the control using a variable, like:

```
<ngx-select id="ngxControl" [formControl]="ngxControl"
                [allowClear]="true"                    
                [items]="items"
                [disabled]="disabledTypeSelectors"
                placeholder="No city selected">
</ngx-select>

enableDisable() {
  this.disabledTypeSelectors = !this.disabledTypeSelectors;
}

```

I've got an example here: `https://stackblitz.com/edit/angular-s4bkg5`
The html is at: app/hero-detail/hero-detail.component.html (scroll to the bottom of that code to see it).[![see error message](https://i.stack.imgur.com/O87Bk.png)](https://i.stack.imgur.com/O87Bk.png)