Neither works, the particles just don’t gain speed, and the script seems to stop looping after one or two loops.
- Active particles don’t get affected when you change the speed only new new particles do
- Speed is a number range not just a number
- To affect active particles use acceleration or drag
- The bottom loop will never run because the top loop never ends. Loops halt your code until they’re done
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presumming what killersonic said is correct: if you want the particles to change speed after they’ve been emitted you may need to set the speed to 0 and set locktopart to true. Then you can move the part. For a simpler setup the acceleration property should be enough of course.