Are boolean variables reset every bar?

[maxpi]

I'm looking at the indicator called Price Alert that is packaged with Ninjatrader 6.5. I'm trying to sort out the flow and I see code that sets the boolean variable called triggerSet but there isn't any code that resets it other than in the variable declarations. This leads me to think that the declarations for the booleans get processed once per bar or something. If this is the case is it similar for other types of variables?

[NinjaTrader_Bertrand]

The reset is achieved through running it only on realtime data (Historical) and returning out when it was triggered.