Nhibernate Projection over nested nested properties

I have domain class location ``` public abstract class BaseEntity<T> where T: struct { public virtual T Id { get; set; } public virtual bool Equals(BaseEntity<T> other) } public class Location : BaseEntity<Int32> { public User User {get;set;} } public class User : BaseEntity<Int32> { public string Name {get;set; } public OtherInfo Otherinfo {get;set;}; } public class OtherInfo { public string preference {get;set;}; } var criteria = session.CreateCriteria(typeof(Location), "alias"); criteria.CreateCriteria("User", "user", JoinType.InnerJoin); criteria.CreateCriteria("user.Otherinfo", "userInfo",JoinType.InnerJoin); criteria.Add(Restrictions.Eq("user.Id", 100)); criteria.SetProjection(Projections.Alias(Projections.Id(), "Id"), Projections.Alias(Projections.Property("user.Name"), "Name"), Projections.Alias(Projections.Property("userInfo.preference "), "pref")); ``` now when i execute above criteria, it gives error on userInfo.preference. {NHibernate.QueryException: could not resolve property: Otherinfo of: Location.User What is mistake here. is it because of multi nested objects