Commented Unassigned: SetValidator with When not work valid in MVC 4 [7142]

I have models and validators:

```
[Validator(typeof(AdressValidator))]
public class Adress {
public string PostalCode { get; set; }
public string Street { get; set; }
}

[Validator(typeof(PersonValidator))]
public class Person
{
public Adress Adress { get; set; }
public bool IsAdress2 { get; set; }
public Adress Adress2 { get; set; }
}

public class AdressValidator : AbstractValidator<Adress> {
public AdressValidator() {
RuleFor(p => p.PostalCode).NotEmpty();
RuleFor(p => p.Street).NotEmpty();
}
}

public class PersonValidator : AbstractValidator<Person>
{
public PersonValidator()
{
RuleFor(p => p.Adress).SetValidator(new AdressValidator());
RuleFor(p => p.Adress2).SetValidator(new AdressValidator()).When(p=>p.IsAdress2);
}
}
```

And controlers:
```
public class HomeController : Controller
{
//
// GET: /Home/

public ActionResult Index() {
Person person = new Person() {
Adress = new Adress() {
PostalCode = "12-100",
Street = "Street 13"
},
IsAdress2 = false,
Adress2 = new Adress()
};

return View(person);
}

[HttpPost]
public ActionResult Index(Person person)
{
if (ModelState.IsValid) {
return RedirectToAction("OK");
}
return View(person);
}

public ActionResult Ok() {
return View();
}
}
```

Adress2 is always validated.

In Attachments is solution without lib and packages.
Comments: sorry for above but I did not know that's how it works.