Hi DaRsiz - You have an undefined global variable in your smoke generator: scene.my.sp2
The smoke generator works, but it would be a good idea to either define the variable, or replace it with a constant if a variable is not needed here. I could make a scene response if you would like to see a slightly different (and in my opinion, a better) version of the smoke generator. Let me know, but if you would rather I do not, then that's Okay with me.
