title: ChildViewController -> ParentViewController -> SecondChildViewController using ContainerView
body: <p>I have a ViewController that houses 2 Containers (one top, one bottom). Top Container houses a ViewController with a button and a textfield (just for illustrating purposes). What I want to do is:</p>
  
  <ol>
  <li>Type text</li>
  <li>Press button</li>
  <li>Send text to bottomViewController</li>
  <li>Display into table</li>
  </ol>
  
  <p>How do I send text to the bottomViewController? Do I somehow have to talk to the parent?</p>
  
  <p>I'm using Storyboards so I have this in the parentViewController</p>
  
  <pre><code>- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
      NSLog(@"Current Segue: %@", segue.identifier);
      if ([segue.identifier isEqualToString:@"topSegue"]) {
          self.enterCommentViewController = segue.destinationViewController;
      }
      else if ([segue.identifier isEqualToString:@"bottomSegue"]) {
          self.commentsViewController = segue.destinationViewController;
      }
  }
  </code></pre>