strong>start</strong> method of your system and</li>
<li>add this code:</li>
</ul>
<pre><code class="hljs css language-js"><span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">start</span>(<span class="hljs-params"></span>) </span>{ 
  <span class="hljs-comment">// get luke component</span>
  <span class="hljs-keyword">let</span> luke = <span class="hljs-keyword">this</span>.require(<span class="hljs-string">'luke'</span>);

  <span class="hljs-comment">// set the 