zend framework - renderWidget in view does nothing -

I am trying to add members in a way to comment on articles. It should be as simple as using what I've collected:

  & lt ;? Php echo $ this- & gt; Content () - & gt; Render Widget ('modulename.widget-name')? & Gt;   
 So this is my endeavor in my attempt:  
    
 Let me just drop a blank  & lt; Div & gt;  seems to get the tag  
 Does anyone know what I'm doing?  
 Edit: Works for  'core.admin-dashboard' , but  'core.comment' . Why is this?   
 
 
 The widget core depression will only appear, the subject and the methods for this topic are 'Comments' and' Likes':  
  if (! ($ ($! $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $$$$$$$ Value-! Method_exists ($ theme, 'comments') & amp; amp; Amp; method_exists ($ subject, 'likes')) { Return $ $-> Setenorender (); }   
 Hope this helps.