ObjectState class and constants-->FieldAccessException

Hi,

when executing the following

[TestFixture]
   public class ClassName2
   {
      [Test]
      public void MethodName()
      {
            className1 className1=new className1();
         ObjectState objectState=new ObjectState(className1);

            objectState.ResetState();
      }
   }

   public class className1
   {
      public const int i = 0;
   }

i get System.FieldAccessException
Message: Cannot set a final field.
i suppose that the correct way is not to attemp to reset the value of a constant or a readonly var