使用来自不同ViewController的数据填充标签

Question

所以我所拥有的是一个激活的pop，它有自己的ViewController和XIB文件。它有一个名为@property (strong, nonatomic) IBOutlet UILabel *addressLabel;的标签问题是我试图在第一个VC（调用弹出窗口）中调用该标签，因为这是我查询数据库以使用DB中的名称填充标签的地方。我可以将* addressLabel设为全局，以便在主VC中重新识别吗？

以下是调用pop的主要VC

- (void)receivedSighting:(FYXVisit *)visit updateTime:(NSDate *)updateTime RSSI:(NSNumber *)RSSI;
{

    NSLog(@"Gimbal Beacon!!! %@", visit.transmitter.name);



    // this will be invoked when an authorized transmitter is sighted during an on-going visit



    [self showTransmittersView];


    //This gets the popup
    SamplePopupViewController *samplePopupViewController = [[SamplePopupViewController alloc] initWithNibName:@"SamplePopupViewController" bundle:nil];
    [self presentPopupViewController:samplePopupViewController animated:YES completion:nil];

    PFQuery *query = [PFQuery queryWithClassName:@"houses"];
    [query whereKey:@"name" equalTo:[NSString stringWithFormat:@"%@",visit.transmitter.name]];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {
            for (PFObject *object in objects) {
                NSLog(@"address: %@", [object objectForKey:@"address"]);
                NSLog(@"url:: %@", [object objectForKey:@"url"]);

                NSString *displayAddress = [NSString stringWithFormat:@"%@", [object objectForKey:@"address"]];
                NSString *displayDescription = [NSString stringWithFormat:@"%@", [object objectForKey:@"description"]];
                NSString *displayUrl = [NSString stringWithFormat:@"%@", [object objectForKey:@"url"]];

                //This is where I was getting the info to put in the pop up label
                self.addressLabel.text = displayAddress;


            }
        } else {
            // Log details of the failure
            NSLog(@"Error: %@ %@", error, [error userInfo]);
        }
    }];



}