How to reference objects in xcode 4 storyboard

Question

In the storyboard I dragged over a viewcontroller (B) so that the storyboard now contains two viewcontrollers... B and the original (A). I put a button on A and dragged it to B to make a button click on A bring up B. On BI dragged a label and a button. I want to click the button on B to make the label on B show "hello world". How do I procede?

Answer 1

If you are member of iOS program, then look for video from Session 309 of WWDC 2011 called ' Instroducing Interface Builder Storyboarding '.