get hidden field value in mvc controller

Question

hi,

 

Req:get hidden field value in controller..

 

@Html.HiddenFor(m => m.appdetails.ApplNum, new { @Value = "defaultUserName", name = "Id" })

 

 

public ActionResult  Name( Model app, int Id) 

{

 

 

}

 

in above code am not getting hidden field value in variable id in acton method.. 

please give me soln for this..