Call method in another class failure

I've set up a little project and in this I would like to call a method in another controller. I've already set up like in this example. However, I tried to run the code but the method doesnt gets called!

Does anyone know what I'm doing wrong?

My Code:

Second.h:

#import <UIKit/UIKit.h> @class First; @interface Second : UIViewController { } @property (nonatomic, retain) First* vC; @end 

Second.m:

#import "Second.h" #import "First.h" @interface First () @end @implementation First @synthesize vC; - (IBAction)dothis:(id)sender { NSLog(@"Hello World!"); [self.vC getThis]; } -(void)viewDidLoad { UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [button addTarget:self action:@selector(dothis:) forControlEvents:UIControlEventTouchDown]; [button setTitle:nil forState:UIControlStateNormal]; button.frame = CGRectMake(5, 70, 270, 200); [super viewDidLoad]; } @end 

First.h:

#import <UIKit/UIKit.h> #import "Second.h" @interface First: UIViewController { //some Outlets and so on... } -(void)getThis; @end 

First.m:

#import "First.h" @interface First () @end @implementation First -(void)getThis { NSLog(@"You reached the end-zone!"); } @end 

Here you can see the parts of my controllers but if I run the app it works fine. However, just when I click the button on Second it displays just "Hello World!" and not "you reached the end-zone!". I tried this with alertviews as well. Could someone teach me how to solve this? I think that there is no connection bewteen the First and the Second but why?

Thanks in advance.