public static void EvaluateChoose()
{
Project project = CreateTestProjectWithCustomField();
// Set Formula
project.ExtendedAttributes[0].Formula = "Choose(3, \"This is a\", \"right\", \"choice\")";
// Print extended attribute value
Task task = project.RootTask.Children.GetById(1);
Console.WriteLine(task.ExtendedAttributes[0].Value);
}