title: Angular formly - How to show Custom error message for custom template
body: <p>I have made custom template using angular formly for international phone numbers.Below is link for custom template.</p>
  
  <p><a href="http://jsbin.com/tizuteyeke/edit?html,output" rel="nofollow">http://jsbin.com/tizuteyeke/edit?html,output</a></p>
  
  <p>How to show custom error message in my custom template using angular formly?</p>