System::String dataDir = RunExamples::GetDataDir(System::Reflection::MethodBase::GetCurrentMethod(ASPOSE_CURRENT_FUNCTION)->get_DeclaringType().get_FullName());
System::SharedPtr<Project> project = System::MakeObject<Project>(dataDir + u"project.mpp");
        
// Define outline code and its outline mask
System::SharedPtr<OutlineCodeDefinition> code1 = System::MakeObject<OutlineCodeDefinition>();
code1->set_Alias(u"New task outline code1");
code1->set_FieldId(System::Convert::ToString(((int32_t)Aspose::Tasks::ExtendedAttributeTask::OutlineCode1)));
code1->set_FieldName(u"Outline Code1");
System::SharedPtr<OutlineMask> mask = System::MakeObject<OutlineMask>();
mask->set_Separator(u"+");
mask->set_Level(1);
mask->set_Type(Aspose::Tasks::MaskType::Numbers);
code1->get_Masks()->Add(mask);
        
// Add outline value
System::SharedPtr<OutlineValue> value = System::MakeObject<OutlineValue>();
value->set_Description(u"Value description");
value->set_ValueId(1);
value->set_Value(u"123456");
value->set_Type(Aspose::Tasks::OutlineValueType::Number);
code1->get_Values()->Add(value);
        
// Add outline code to project
project->get_OutlineCodes()->Add(code1);
        
// Define outline code and its outline mask
System::SharedPtr<OutlineCodeDefinition> code2 = System::MakeObject<OutlineCodeDefinition>();
code2->set_Alias(u"New rsc outline code2");
code2->set_FieldId(System::Convert::ToString(((int32_t)Aspose::Tasks::ExtendedAttributeResource::OutlineCode2)));
code2->set_FieldName(u"Outline Code2");
System::SharedPtr<OutlineMask> mask2 = System::MakeObject<OutlineMask>();
mask2->set_Separator(u"/");
mask2->set_Level(1);
mask2->set_Type(Aspose::Tasks::MaskType::Numbers);
code2->get_Masks()->Add(mask2);
        
// Add outline value
System::SharedPtr<OutlineValue> value2 = System::MakeObject<OutlineValue>();
value2->set_Description(u"Value2 description");
value2->set_ValueId(2);
value2->set_Value(u"987654");
value2->set_Type(Aspose::Tasks::OutlineValueType::Number);
code2->get_Values()->Add(value2);
        
// Add outline code to project
project->get_OutlineCodes()->Add(code2);
        
// Save project as MPP
project->Save(dataDir + u"Updated_project_out.mpp", Aspose::Tasks::Saving::SaveFileFormat::MPP);