Hm..Particle Engine?
 

I have recently been fooling around with the particle engine and I came up with a really slick idea for a smoke effect...Unfortunetly, It won't work because when adding a local modifier to the script, "once" doesnt actually mean once...So Stefan if you by chance happen to fall upon this post, I was wondering if you could fix this problem. Thanks for your time ^^

Could you explain it more? What doesn't work with the "once" modifier ?