EagleML Web Service - Asynchronous Request with FTP Delivery

//create async runtaskrequest message for making SMF extract with FTP delivery
        private static eagleSvc.WSRunTaskRequest GenerateFTPRunTaskRequest()
        {
            //create WSRunTaskRequest object
            var runTaskRequest = new eagleSvc.WSRunTaskRequest();
            //create RunTaskRequest object
            var eagleML = new eagleSvc.RunTaskRequest();
            //create header section
            var header = new eagleSvc.RequestMessageHeader();
            //set messageId
            header.messageId = new eagleSvc.MessageId { Value = "ID:FTPSMFEXTRACT01" };
            //set sendBy
            header.sentBy = new eagleSvc.MessageAddress { Value = "user" };
            //set sendTo , sendTo must be http://www.eagleinvsys.com/eagle_ml-2-0_default_cm_control_message
            header.sendTo = new eagleSvc.MessageAddress[1] { new eagleSvc.MessageAddress { Value = "http://www.eagleinvsys.com/eagle_ml-2-0_default_cm_control_message" } };
            //set timestamp
            header.creationTimestamp = DateTime.Now;
            eagleML.header = header;
            //create taskidentifier section
            var taskIdentifier = new eagleSvc.TaskIdentifier();
            //set correlationId, must be unique
            taskIdentifier.correlationId = new eagleSvc.CorrelationId { correlationIdScheme = "correlationIdScheme", Value = GenerateUID() };
            //set businessTaskId
            taskIdentifier.businessTaskId = new eagleSvc.CorrelationId { correlationIdScheme = "businessTaskIdScheme", Value = "FTP_SMFIST_EXTRACT" };
            eagleML.taskIdentifier = taskIdentifier;
            //set TaskTypeEnum
            eagleML.taskTypeEnum = eagleSvc.TaskTypeEnum.LOAD;
            //create and set task parameters
            var taskParameters = new eagleSvc.TaskParameter[5];
            taskParameters[0] = new eagleSvc.TaskParameter { name = "ActionType", dataType = eagleSvc.DataTypeEnum.S, value = "EXTRACT" };
            taskParameters[1] = new eagleSvc.TaskParameter { name = "StreamName", dataType = eagleSvc.DataTypeEnum.S, value = "eagle_ml-2-0_default_out_q" };
            taskParameters[2] = new eagleSvc.TaskParameter { name = "FeedType", dataType = eagleSvc.DataTypeEnum.S, value = "SMFEXTRACT" };
            taskParameters[3] = new eagleSvc.TaskParameter { name = "fromdate", dataType = eagleSvc.DataTypeEnum.S, value = "2014-12-04 18-00-00" };
            //FTP parameter
            taskParameters[4] = new eagleSvc.TaskParameter { name = "DeliveryMethod", dataType = eagleSvc.DataTypeEnum.S, value = "FTP" };
            eagleML.taskParameters = taskParameters;
            runTaskRequest.EagleML = eagleML;
            return runTaskRequest;
        }

//FTP parameter
      taskParameters[4] = new eagleSvc.TaskParameter { name = "DeliveryMethod", dataType = eagleSvc.DataTypeEnum.S, value = "FTP" };

eagleSvc.WSTaskAcknowledgement ack2 = myClient.RunTaskRequest(runTaskRequest);