title: FormIO + Angular - Reply an input on change
body: <p>I want to reply the value of an input in an other.
  For example:</p>
  
  <pre><code>&lt;input name="n" &gt;Name&lt;/input&gt;
  &lt;input name="n2" &gt;Name2&lt;/input&gt;
  </code></pre>
  
  <p>And i want to keep the change of the value from "Name" and put it to "Name2".</p>
  
  <p>Inside an Angular template i have put this declaration:</p>
  
  <pre><code>&lt;formio [form]="formProva" (submit)="onSubmit($event)" [submission]="myJSON" (change)="onChange($event)"&gt; &lt;/formio&gt;
  </code></pre>
  
  <p>where:</p>
  
  <ol>
  <li>formProva -> the Form.IO JSON schema of the form i want to represent</li>
  <li>onChange(param) -> In this function i:
  
  <ol>
  <li>keep the JSON schema of the form from 'param'</li>
  <li>keep the modified value from "Name" navigating in 'param'</li>
  <li>Assign the value from "Name" in 'param' to "Name2" in 'myJSON'.</li>
  </ol></li>
  </ol>
  
  <p>My problem is that nothing change in the view, but:</p>
  
  <pre><code>console.log(param);
  console.log(myJSON);
  </code></pre>
  
  <p>show the correct modification in the json schema.
  Anyone knows how to solve it?</p>