I need help with particles. I am just starting out with particles and i put a size by speed module for sparks to get longer in the direction they travel. But the size by speed doesnt work. If i put a number into Y, the particles dont change size in any direction and if i put a number into X, they change size in both axes making it basically a uniform scale. I watched the unreal tutorials on sparks and put numbers into both max scale and speed scale in the Y. Also, when I tested to see if it would work with gpu sprites, the particles did scale up in the y but they did not angle the direction they were traveling. so the sparks were just vertical lines staying vertical for their whole life. Please help.