Вложенный массив Angular 7 не работает при нажатии

    NSLocale *currentLocale = [NSLocale currentLocale];  // get the current locale.
    NSString *countryCode = [currentLocale objectForKey:NSLocaleCountryCode];

    // get country code, e.g. ES (Spain), FR (France), etc.
    NSLog(@"country code is:%@",countryCode);
    NSString*lower=[countryCode lowercaseString];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"DiallingCodes" ofType:@"plist"];
    NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path];
    NSMutableDictionary *_dictCountry=[[NSMutableDictionary alloc]init];
    NSMutableArray *_CodeArray=[[NSMutableArray alloc]init];
    [_CodeArray addObject:dict];

    _dictCountry = [_CodeArray objectAtIndex:0];


    NSString*Country_code=[NSString stringWithFormat:@"+%@",[_dictCountry objectForKey:lower]];


    contactTextField.text=Country_code;