如何使用SAP Cloud for Customer里的ABSL代码调用Web service

import ABSL;
import AP.CRM.Global;
import AP.Common.GDT;
var ticketReq: JerryTicket2.MaintainBundle.Request;
var SerReq : JerryTicket2.MaintainBundle.Request.ServiceRequestBundleMaintainRequest2_sync.ServiceRequest ;
var SrvReqItem : JerryTicket2.MaintainBundle.Request.ServiceRequestBundleMaintainRequest2_sync.ServiceRequest.Item;
SerReq.actionCode = "06";
SerReq.ID = this.ID;
var counter = 0;
while(counter < 500)
{
SrvReqItem.actionCode = "01"; //Create Item
SrvReqItem.Description.content = "Add item from WS" ;
SrvReqItem.ProductID.content = "P120100";
SrvReqItem.RequestedQuantity.content = 1.0;
SrvReqItem.RequestedQuantity.unitCode = "EA";
SrvReqItem.UserServiceTransactionProcessingTypeCode = "SRP0";
SerReq.Item.Add(SrvReqItem);
counter = counter + 1;
}
ticketReq.ServiceRequestBundleMaintainRequest2_sync.ServiceRequest.Add(SerReq);
var response = Library::JerryTicket2.MaintainBundle(ticketReq,"","JerryTicket2");