ios地図指定位置へジャンプ

まずmyBtnというbuttonを宣言します

myBtn = [[UIButton alloc]initWithFrame:CGRectMake(50, 50, 100, 50)];
    myBtn.backgroundColor = [UIColor grayColor];
    [myBtn addTarget:self action:@selector(myButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:myBtn];

myButtonPressed関数

- (void) myButtonPressed:(id)sender{
        CLLocationCoordinate2D myDst = CLLocationCoordinate2DMake(39.0, 121.0);
    MKMapItem *dstLocation = [[MKMapItem alloc] initWithPlacemark:[[MKPlacemark alloc] initWithCoordinate:myDst addressDictionary:nil]];
    dstLocation.name = @" ";
    [MKMapItem openMapsWithItems:@[dstLocation] launchOptions:@{MKLaunchOptionsMapCenterKey:[NSNumber numberWithBool:YES]}];

39.121.0にジャンプしました海にいるようですが