If you are trying to use them as a counter, they go up to 9 then reset.
On Activate - Named Brick - IncreasePrintCount - 1
On Printcountoverflow - Named Brick 2 - IncreasePrintCount - 1
Clocks are also possible, but can require way too much time to event. The printcount events are usually only used for counters when entering lots, second timers, and how many times people clicked something.