ParameterExpression to Object Casting with Reflection

I want to cast any object from ParameterExpression class.

This is sample code :

   public void Execute(Expression<Action<TService>> operation)
        {
            try
            {

                var param = operation.Parameters[0]; //myparameter to cast
                var obj = param as AnyCastObject; // I want to cast
                DoSomething(obj); // and do something this object without losing any assigned propery.

                operation.Compile().Invoke(OpenNewChannel);
            }
            finally
            {
                CloseChannel();
            }
        }