I have a page that contains several forms, by submitting each one of them, next form becomes visible.

the last form contains a recaptcha validator, my problem starts here, if i declare an action result for that page like this

[CaptchaValidator]
public ActionResult myAction(SomeModel model, string lang)
{
  return View("towing", model);
}

I'm getting an argument null exeption parameter "Challenge", which in fact means that you have to POST those fields from recaptcha for the validation to appear and I cannot post anyting untill the last for is visible and posted.

then I've added a news ActionResult like myActionValidated, defined a route for it like: mypage/validate pointing to that actionresult

and then i don't know where to go from here, i want simply do display a message if the reCaptcha did not validate and redirect to a URL if it succeeded.

I hope I made myself clear. Thank you in advance