What's wrong? Simple button click to put input on to label

I'm trying to build a simple application with an input box, button, and label.
Clicking the button should take the input box contents and display it upon the label. However, although I have no bugs listed, clicking the button in the app does nothing.
I have in my .h file:
@interface VTViewController : UIViewController
    IBOutlet UITextField *input;
    IBOutlet UILabel *label;
    NSString *contentStore;
-(IBAction)button;
and in my .m file:
#import "VTViewController.h"
@interface VTViewController ()
@end
@implementation VTViewController
-(IBAction)button
    [input resignFirstResponder];
    contentStore = input.text;
    label.text = contentStore;

Put a breakpoint in the button method to verify the IBAction is being triggered.
Make sure the IBOutlets are hooked up, for example it should look like this in the Connections Inspector.
It looks like you hand-rolled this rather than Ctrl+dragging the controls into the header. Normally the IBOutlets are synthesized properties, and the button method should have a parameter.
- (IBAction)buttonPushed:(id)sender {

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Oops - I overlooked that. Then the solution is:
self.mln = whatever
instead of what I said the first time. Using 'self' accesses the generated property. Just calling 'mln' like you were sets the instance variable directly bypassing the property method and is auto generated retain.
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What's wrong? Simple button click to put input on to label

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