MyViewController *myViewController = [[MyViewController alloc] init];
                myViewController.url = url;
                myViewController.paReq = paReq;
                myViewController.md = md;
                [self.navigationController pushViewController:myViewController animated:true];

//MyViewController.h
@interface MyViewController : UIViewController<D3DSDelegate>
@property (nonatomic, strong) NSString *url;
@property (nonatomic, strong) NSString *md;
@property (nonatomic, strong) NSString *paReq;
@end


//MyViewController.m
#import "MyViewController.h"
@implementation MyViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    D3DS *d3ds = [[D3DS alloc] init];
    [d3ds make3DSPaymentWithUIViewController:self andAcsURLString:_url andPaReqString:_paReq andTransactionIdString:_md];
}

- (void)authorizationCompletedWithMD:(NSString *)md andPares:(NSString *)paRes {
    printf(@"auth completed");
}

- (void)authorizationFailedWithHtml:(NSString *)html {
    printf(@"auth failed");
}
@end