Use seedRandom(seed,true) to generate the same sequence of random numbers on each frame. This should get you headed in the right direction: seedRandom(index,true); minStart = 0; maxStart = 5; myStart = random(minStart,maxStart); amt = linear(time, myStart, myStart+10, 0, -2000); value + toWorldVec([0,0,1])*amt Dan
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