RemoteAttribute is not passing parameter to action?

RemoteAttribute is not passing parameter to action?

I am trying to use the RemoteAttribute to validate a data element
serverside using JSON. My data field is:
[Display(Name = "My Number")]
[Required]
[Remote("IsValidMyNumber","Home",ErrorMessage="Bummer")]
public string MyNumber { get; set; }
My controller is:
public JsonResult IsValidMyNumber(string MyNumber)
{
var test = services.ValidateMyNumber(MyNumber);
return Json(test,JsonRequestBehavior.AllowGet);
}
When I debug and step inside my controller the "MyNumber" parameter is
null even though I have text in the textbox that this represents.
I know that the name has to be the same in the textbox as in the parameter
and I have validated that.
Any ideas?