Objective C Transparent UIViewController for Gameover Screen - ios

Question

Information: I would like to make a little Game (Not Important what kind of game) with a little Game Over Screen.
Because i cant Upload Images, i try to Describe it.
You Play, everything is alright. Then you get Gameover. The Screen should be the Same and an Overlayer is Showing the Score (Transparent / Alpha)
Now my First Question is: Is my Solution good?
I use one UIViewController from the Storyboard
Source:
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController
{
IBOutlet UIButton *btnTest;
}
-(IBAction)btnTestClick;
#end
ViewController.m
#import "ViewController.h"
#import "MeinGottEh.h"
#interface ViewController ()
#end
#implementation ViewController
-(void)btnTestClick
{
self.modalPresentationStyle = UIModalPresentationCurrentContext;
MeinGottEh *sampleView = [[MeinGottEh alloc] init];
sampleView.labelText = #"High: 123";
[sampleView setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
[self presentModalViewController:sampleView animated:YES];
}
#end
Then the Second UIViewController (External File, not in Storyboard)
MeinGottEh.h
#import <UIKit/UIKit.h>
#interface MeinGottEh : UIViewController
{
IBOutlet UIButton *btnClose;
}
-(IBAction)btnCloseClick;
#property(nonatomic) NSString *labelText;
#end
MeinGottEh.m
#import "MeinGottEh.h"
#interface MeinGottEh ()
#end
#implementation MeinGottEh
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor clearColor];
[btnClose setTitle:self.labelText forState:UIControlStateNormal];
}
-(void)btnCloseClick
{
[self dismissModalViewControllerAnimated:YES];
}
#end
Is this Solution to Open a Highscore Box good? If no, please tell me how to do it (I make a Research on Stackoverflow. Thats the Most Parts)
If Yes: How can i make it Transparent?
Thank you very much.