Anybody an idea on how to show a new view controller if the alert is validated? (objective c)

instead of a button i'd like to change the view controller if a alert is validated but i've no idea how to do is. I use a cocoa pod for the notification (just cause the design is beautiful). every answer is welcome!

• (IBAction)changeTheme:(UIButton *)sender {

  // for changing view controller [UIView animateKeyframesWithDuration:1.0 delay:0 options:0 animations:^{ changeTheme.transform = CGAffineTransformMakeScale(2, 2); } completion:^(BOOL finished) {

  // init alert with options
  SCLAlertView *changeThemeNotification = [[SCLAlertView alloc] init];
  
  // to sport
  [changeThemeNotification addButton:@"change to sport" validationBlock:^BOOL{
      BOOL passedValidation = true;
      return passedValidation;
  } actionBlock:^{
  
  }];
  // to food
  [changeThemeNotification addButton:@"change to food" validationBlock:^BOOL{
      BOOL passedValidation = true;
       return passedValidation;
  } actionBlock:^{
      [self.view setBackgroundColor:[UIColor blackColor]];
  }];
  
  // to animal
   [changeThemeNotification addButton:@"change to animal" validationBlock:^BOOL{
       BOOL passedValidation = true;
       return passedValidation;
   } actionBlock:^{
       [self.view setBackgroundColor:[UIColor greenColor]];
   }];
  
    // else (message & options)
  [changeThemeNotification showCustom:self image:nil color:[self.colorWheel randomColor] title:@"Test" subTitle:@"This is a test notification for the navigation." closeButtonTitle:@"stay" duration:0.0f];
  changeThemeNotification.hideAnimationType = SlideOutToBottom;
  changeThemeNotification.shouldDismissOnTapOutside = YES;
  changeThemeNotification.soundURL = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/url_to_sound.mp3", [[NSBundle mainBundle] resourcePath]]];
  

  }]; }