How to retrieve the Sales Order id that we just create?

Hello,

I'm creating a new Sales Order in ClientScript and I can't retrieve the Sales Order id just after the save() fonction, how can I retrieve it please?

         var salesOrder = record.create({              type: record.Type.SALES_ORDER,              isDynamic: true,              defaultValues: {                  entity: 75              }          });            salesOrder.selectNewLine({ //add a line to a sublist              sublistId: "item"      //specify which sublist          });            salesOrder.setCurrentSublistValue({   //set item field              sublistId: "item",              fieldId: "item",              value: 694            });            salesOrder.setCurrentSublistValue({ //set quantity              sublistId: "item",              fieldId: "quantity",              value: 1         });            salesOrder.commitLine({  //writes the line entry into the loaded record              sublistId: "item"          });            salesOrder.save({                  //writes record back to database              ignoreMandatoryFields: true              });            //Try to get Sales Order id but nothing returned           //Method 1         alert(salesOrder.id);            //Method 2          var salesOrderId = salesOrder.getValue({              fieldId: "id"          });            alert(salesOrderId);