title: Changing variables from one nib to another
body: <p>Let's say I have:</p>
  
  <pre><code>FirstViewController.h
  FirstViewController.m
  FirstViewController.xib
  
  SecondViewController.h
  SecondViewController.m
  SecondViewController.xib
  </code></pre>
  
  <p>In the FirstViewController.h there is:</p>
  
  <pre><code>@interface FirstViewController : UIViewController
  {
      int number;
  }
  
  @property (nonatomic, retain) int number;
  @end
  </code></pre>
  
  <p>And in FirstViewController.m there is:</p>
  
  <pre><code>- (void)viewDidLoad
  {
      int number = 4;
  }
  </code></pre>
  
  <p>Is there a way that I could write a function for SecondViewController that could change the value for int number from 4 to let's say 9?</p>
  
  <p>I don't know how to change variables from another XIB or .m file...</p>