public static void CreateActivityLogTask()
        {
            var binding = new BasicHttpBinding();
            binding.MaxReceivedMessageSize = Int32.MaxValue;

            var target = new bfsapi.bfsapiSoapClient(binding, new EndpointAddress("http://localhost:20010/bfsapi.asmx"));
            var req = new CreateTasksRequest();
            req.Credentials = new bfsapi.Credentials
            {
                UserName = GetApiUserName(),
                Password = GetApiPassword()
            };

            req.identify = GetApiIdentifier();

            req.Entities = new[]
            {
                new bfsapi.CreateTask
                {
                    Status = "Done",
                    Heading = "TestHeading",
                    IsHTML = true,
                    Text = "Texting",
                    User = Guid.NewGuid(),
                    Administrator = Guid.NewGuid(),
                    Priority = "Medium",
                    CustomFields = new CustomField[]
                    {
                        new CustomField
                        {
                            FieldName = "TestField",
                            Value = "TestValue"
                        }, 
                    },
                    DueDate = DateTime.Today.AddDays(10)
                    
                }
            };

            var resp = target.CreateTasks(req);
        }