[NTG-context] how to compute the sum of numbers

Hello, I'm preparing a simple template for exam tests. I have following commad. \question{3}{text text text} where firtst parametr stands for points. I'd like to compute the sum of points to be used as "Total points: xx" What is the correct approach to do that if I'm using MKII? greetings Jan -- Tato zpráva byla vytvořena převratným poštovním klientem Opery: http://www.opera.com/mail/