Better example of the whole bool? problem. Disabled select throws an exception

public class ReportDatasourceHelper {
	private BeesActsEntityManager EntityManager {
		get;
		set;
	}
	public IEnumerable GetEmployeeDetails() {
		var x = ( from emp in EntityManager.PersonSets.OfType<Employee>()
			 select new {
					EmpID = emp.IDNumber,
					Gender = emp.Gender.Name,
					Name = emp.FirstName,
					Surname = emp.Surname,
					Disabled = ((emp.Disabled.HasValue && emp.Disabled.Value) ? 1 : 0)
					//Disabled = Convert.ToInt32(( emp.Disabled.HasValue && emp.Disabled.Value ))
				    } ).OrderBy(r => r.EmpID);
		return x;
	}
}

and this get called to bind to a datasource for a RS report

ReportDatasourceHelper helper = new ReportDatasourceHelper;
helper.EntityManager = _EntityManager;
ReportViewer.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("Employee_Details", helper.GetEmployeeDetails()));