Time

This is a pretty big problem.. really i have no idea how to make time in gamesalad. My first thought was just to create an actor that changed an attribute to that attribute + 1 every second but that didn't work for some reason, yea i watched tsb's vid on how to make a timer all it shows is 'invalid equation' or something, anybody have any ideas?? if anybody can help me that would be epic
))))

Comments
in actor place TIMER attribute
every 1 sec
--> change attribute game.TIMER = game.TIMER+1
check run to completion.