title: Angular2: how bind to select multiple
body: <p>I'm able to bind using <code>ngModel</code> for a single select but I would like to bind an array to the multiple selected options.  When I attempt this I get the error </p>
  
  <blockquote>
    <p>Cannot find a differ supporting object 'xxx' in 'myModelProperty'</p>
  </blockquote>
  
  <p><strong>My Code</strong></p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;select multiple [(ngModel)]="myModelProperty"&gt;
      &lt;option *ngFor="#item of myOptions" [value]="item.value"&gt;{{item.name}}&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>