iOS Build a Simple iPhone App with Objective-C Views and View Controllers IBActions and IBOutlets

quoteButton text

I am doing exactly what everyone says to do online but my code is not working. It says I'm not setting the text property, even though I clearly am. Could somebody help me? Thanks in advance.

#import "UIViewController.h"
#import "UILabel.h"

@interface ViewController: UIViewController

@property (strong, nonatomic) IBOutlet UILabel *quoteLabel;

- (IBAction)quoteButtonPressed;

#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.

- (IBAction)quoteButtonPressed {

    //Add your code below!
  //self.quoteLabel.text = @"A stitch in time saves nine.";
  quoteLabel.text = @"A stitch in time saves nine."