问将标签文本设置为变量iOS 7

EN

#import "VideoDetailViewController.h"
#import "VideoListViewController.h"
#import "MapAnnotation.h"
#import "VideoDetail.h"

@interface VideoDetailViewController ()

@property (readonly) NSString *api_username;
@property (readonly) NSString *api_password;
@property (readonly) NSString *nplays;

@end

@implementation VideoDetailViewController

@synthesize Plays;


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.title = self.name.name;

    // Load the data on a background queue...
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        NSURL *url = [NSURL URLWithString: [NSString stringWithFormat:@"https://%s:%s@api.wistia.com/v1/stats/medias/c3e4797d8f.json", "api", "1b75e458de33a9b3f99d33f6bf409a7e145c570a"]];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

        [request setURL:url];
        [request setHTTPMethod:@"GET"];
        [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

        NSError *error;
        NSURLResponse *response;
        NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

        // NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
        NSLog(@"%@", [jsonDict objectForKey:@"play_count"]);
        NSNumber *_plays  = [jsonDict objectForKey:@"play_count"];
        _nplays = [NSNumberFormatter localizedStringFromNumber:_plays numberStyle:NSNumberFormatterNoStyle];

        // SET LABEL TO VALUE
        Plays.text = _nplays;
    }
    );

}

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

@end

// NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
    NSLog(@"%@", [jsonDict objectForKey:@"play_count"]);
    NSNumber *_plays  = [jsonDict objectForKey:@"play_count"];
    _nplays = [NSNumberFormatter localizedStringFromNumber:_plays numberStyle:NSNumberFormatterNoStyle];
    self.textEngagement.text = _nplays;
    NSLog(@"%@", self.textEngagement.text);