Tests.TicketTests.BooleanCustomFieldValuesArePreservedOnUpdate C# (CSharp) Method

        public void BooleanCustomFieldValuesArePreservedOnUpdate()
        {
            var ticket = new Ticket()
            {
                Subject = "my printer is on fire",
                Comment = new Comment() { Body = "HELP" },
                Priority = TicketPriorities.Urgent,
            };

            ticket.CustomFields = new List<CustomField>()
                {
                    new CustomField()
                        {
                            Id = Settings.CustomFieldId,
                            Value = "testing"
                        },
                    new CustomField()
                        {
                            Id = Settings.CustomBoolFieldId,
                            Value = true
                        }
                };

            var res = api.Tickets.CreateTicket(ticket).Ticket;
            Assert.AreEqual(ticket.CustomFields[1].Value, res.CustomFields.Where(f => f.Id == Settings.CustomBoolFieldId).FirstOrDefault().Value);

            //var updateResponse = api.Tickets.UpdateTicket(res, new Comment() { Body = "Just trying to update it!", Public = true});
            //res.UpdatedAt = null;
            //res.CreatedAt = null;

            var updateResponse = api.Tickets.UpdateTicket(res, new Comment() { Body = "Just trying to update it!", Public = true });

            Assert.AreEqual(ticket.CustomFields[1].Value, updateResponse.Ticket.CustomFields[1].Value);


            Assert.True(api.Tickets.Delete(res.Id.Value));

        }