Local variables are certainly an option. Property nodes are another, but both of which are probably the least recommended around here.
You can use shift registers, but then you have to be careful about where you update your indicator. Unless you've got a ton of these that need updating, that's the way I'd go.
Place your indicators outside the event structure and then just make sure you wire everything through every case (otherwise you'll end up with the default value of your indicator's type). See the image... I think it's more clear than my words can be.

Message Edited by Will.D on 10-31-2006 04:16 PM