title: How to create a observable List in kotlin
body: <p>I want to update my text whenever there is a new element added to my list..
  I tried to do this by below code..</p>
  
  <pre><code>var myList: MutableList&lt;ArrayList&lt;String&gt;&gt; by Delegates.observable(mutableListOf(), onChange = { _, _, new -&gt;
      Constants.debug("Value Changed")
  })
  </code></pre>
  
  <p>But it doesn't seem to work.. Any ideas?</p>