you have several options here. You could just use the alarm system to track it, or you can involve variables and even use several variables in conjunction with the alarm system and some images.
Edit: ok, given that I've learned some new things about this. first, you'll want an object to draw some test. for the text put '(timer name here)' + string(timer's variable name here). also, you ll want an alarm to keep the timer moving as you see fit.