[nhibernate-development] Nihibenate - queryover with a integer value

[james]

I have a problem with the following,

queryOverList = Session.QueryOver<Actor>()
                    .Where(x => x.Number.IsLike(number + "%"))
                    .And(x => x.Country.Id == countryCodeId)
                    .And(x => x.IdNumber.IsLike(idNumber + "%"))
                    .WithSubquery
                    .WhereProperty(x => x.Id)
                    .In(detachedAddressQueryOver)
                    .WithSubquery
                    .WhereProperty(x => x.Id)
                    .In(detachedDerivedActorQueryOver)
                    .List();


my countryCodeId is an integer.

so if i do not pass any value, it would be 0. So when nothing is
passed in I want to return all for that countryCode condition since I
am not passing in any value. Buit instead it searched for 0 and return
me nothing. What can do with such int's