I believe the problem is that you have declared the variables, but not yet created them. In the Init, go ahead and set them each to a new collection. (You can also dimension them AS NEW but for various reasons, this isn't a good idea -- most importantly, there's a slight performance hit every time you reference the variable, and there are a few other issues with it).
The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts. - Bertrand Russell
