// Create project instance
System::String dataDir = RunExamples::GetDataDir(System::Reflection::MethodBase::GetCurrentMethod(ASPOSE_CURRENT_FUNCTION)->get_DeclaringType().get_FullName());
System::String newProject = u"UpdateTaskData.mpp";
System::SharedPtr<Project> project = System::MakeObject<Project>(dataDir + newProject);
        
// Set project start date
project->Set(Prj::StartDate(), System::DateTime(2012, 7, 29, 8, 0, 0));
        
// Add summary task and set its properties
System::SharedPtr<Task> summary = project->get_RootTask()->get_Children()->Add(u"Summary task");
System::SharedPtr<Task> task1 = summary->get_Children()->Add(u"First task");
task1->Set<Duration>(Tsk::Duration(), project->GetDuration(3));
task1->Set(Tsk::Deadline(), task1->Get<System::DateTime>(Tsk::Start()).AddDays(10));
task1->Set<System::String>(Tsk::NotesText(), u"The first task.");
task1->Set<TimeUnitType>(Tsk::DurationFormat(), Aspose::Tasks::TimeUnitType::MinuteEstimated);
task1->Set<ConstraintType>(Tsk::ConstraintType(), Aspose::Tasks::ConstraintType::FinishNoLaterThan);
task1->Set(Tsk::ConstraintDate(), task1->Get<System::DateTime>(Tsk::Deadline()).AddDays(-1));
        
        
// Create 10 new sub tasks for summary task
for (int32_t i = 0; i < 10; i++)
{
    System::SharedPtr<Task> subTask = summary->get_Children()->Add(System::String::Format(u"Task{0}",i + 2));
    subTask->Set<Duration>(Tsk::Duration(), task1->Get<Duration>(Tsk::Duration()).Add(project->GetDuration(i + 1)));
    subTask->Set<TimeUnitType>(Tsk::DurationFormat(), Aspose::Tasks::TimeUnitType::Day);
    subTask->Set(Tsk::Deadline(), task1->Get<System::DateTime>(Tsk::Deadline()).AddDays(i + 1));
}
        
// Save the Project
project->Save(dataDir + u"project_UpdateTaskData_updated_out.mpp", Aspose::Tasks::Saving::SaveFileFormat::MPP);