//Assign
MyBO.setInt("aInt", (MyInt.intValue() + 1) );
MyBO.setString("aString","Process_B.MyBO.aString");

DataObject processBusinessObject = Output.getDataObject("processBusinessObject");
processBusinessObject.setInt("aInt", MyInt.intValue());
processBusinessObject.setString("aString", "Process_B.Output.processBusinessObject.aString");

//nested
DataObject nested = processBusinessObject.getDataObject("aBO");
nested.setInt("aInt", (MyInt.intValue() + 2) );
nested.setString("aString","Process_B.Output.processBusinessObject.aBO.aString");

//copy DataObjects - deep copy
BOCopy copyService = (BOCopy)ServiceManager.INSTANCE.locateService("com/ibm/websphere/bo/BOCopy");
DataObject copyBO = copyService.copy(MyBO);
Output.set("processBO", copyBO);