System::SharedPtr<Project> project = System::MakeObject<Project>(dataDir + u"New project 2013.mpp");
    
auto task = project->get_RootTask()->get_Children()->Add(u"t1");
    
auto materialResource = project->get_Resources()->Add(u"materialResource");
materialResource->Set<ResourceType>(Rsc::Type(), Aspose::Tasks::ResourceType::Material);
    
auto nonMaterialResource = project->get_Resources()->Add(u"nonMaterialResource");
nonMaterialResource->Set<ResourceType>(Rsc::Type(), Aspose::Tasks::ResourceType::Work);
    
auto materialResourceAssignment = project->get_ResourceAssignments()->Add(task, materialResource);
materialResourceAssignment->Set<RateScaleType>(Asn::RateScale(), Aspose::Tasks::RateScaleType::Week);
materialResourceAssignment->Set<int32_t>(Asn::Uid(), 1);
    
auto nonMaterialResourceAssignment = project->get_ResourceAssignments()->Add(task, nonMaterialResource);
nonMaterialResourceAssignment->Set<RateScaleType>(Asn::RateScale(), Aspose::Tasks::RateScaleType::Week);
nonMaterialResourceAssignment->Set<int32_t>(Asn::Uid(), 2);
    
project->Save(dataDir + u"output.mpp", Aspose::Tasks::Saving::SaveFileFormat::MPP);
    
auto resavedProject = System::MakeObject<Project>(dataDir + u"output.mpp");
    
auto resavedMaterialResourceAssignment = resavedProject->get_ResourceAssignments()->GetByUid(1);
System::Console::WriteLine(System::ObjectExt::Box<RateScaleType>(resavedMaterialResourceAssignment->Get<RateScaleType>(Asn::RateScale())));
    
// only material resource assignments can have non-zero rate scale value.
auto resavedNonMaterialResourceAssignment = resavedProject->get_ResourceAssignments()->GetByUid(2);