title: Simple Passing of variables between classes in Xcode
body: <p>I am trying to do an ios app but I am stuck at passing data between classes .
  This is my second app . The first one was done whit a global class , but now I need
  multiple classes . I tried many tutorials , but did not work or the passed value was always zero . Can someone please write me a simple app to demonstrate passing of variables in IOS 5 .
  Nothing special , storyboard whith 2 view controllers , one variable . </p>
  
  <p>Thank you for your help . </p>
  
  <pre><code>- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
  {
      // Navigation logic may go here. Create and push another view controller.
  
              FirstViewController *fv;
              fv.value = indexPath.row;
  
              NSLog(@"The current %d", fv.value);
  
              FirstViewController *detail =[self.storyboard instantiateViewControllerWithIdentifier:@"Detail"];
              [self.navigationController pushViewController:detail animated:YES]; 
  
  }
  </code></pre>
  
  <p>here is the code from my main view and i need to send the indexPath.row or the index of the cell that i pressed to the next view </p>