date123 triggering semantic error

RAFirstViewController.m

//
//  RAFirstViewController.m
//  Rally
//
//  Created by Andrew Schreiber on 9/27/13.
//  Copyright (c) 2013 Andrew Schreiber. All rights reserved.
//

#import "RAFirstViewController.h"
#import "RASecondViewController.h"

@interface RAFirstViewController ()

@end

@implementation RAFirstViewController


- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [self timeUpdate];
    
    NSRunLoop *runloop = [NSRunLoop currentRunLoop];
    
    NSTimer *timer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(timeUpdate) userInfo:nil repeats:YES];
    [runloop addTimer:timer forMode:NSRunLoopCommonModes];
    [runloop addTimer:timer forMode:UITrackingRunLoopMode];
    
  // Do any additional setup after loading the view, typically from a nib.
}

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

- (void)timeUpdate
{
    if(!_presentTime) _presentTime = [[NSString alloc]init];
    
    NSDate *now = [NSDate date];
    
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc]init];
    [dateFormat setDateFormat:@"h:mm"];
    
    _presentTime= [dateFormat stringFromDate:now];
    _currentTimeLabel.text = _presentTime;
    
    NSString *currentAlarmTime = [[NSString alloc]init];
   

// PROBLEM HERE

    currentAlarmTime = [dateFormat stringFromDate:date123];
    
    
    _alarmTimeLabel.text=currentAlarmTime;


}












@end

SecondFirstViewController.h

//
//  RASecondViewController.h
//  Rally
//
//  Created by Andrew Schreiber on 9/27/13.
//  Copyright (c) 2013 Andrew Schreiber. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "RARally.h"
#import "RAFirstViewController.h"

@interface RASecondViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIDatePicker *datePicker;

@property (weak,nonatomic) IBOutlet UIButton *firstPictureButton;
@property (weak,nonatomic) IBOutlet UIButton *secondPictureButton;

@property (weak,nonatomic) IBOutlet UIButton *setRallyButton;

//DATE DECLARED

@property (strong, nonatomic) NSDate *date123;




@property (weak,nonatomic) IBOutlet UIImageView *firstPictureView;
@property (weak,nonatomic) IBOutlet UIImageView *secondPictureView;
@property (strong, nonatomic) RARally *currentRally;

@property (strong, nonatomic) NSMutableArray *savedAlarmTimes;


@end