How to edit particle size over lifetime

I am trying to create a game and I need a single particle to spawn small, grow large before quickly collapsing again. I tried the particle size over lifetime module but it won’t work for some reason. Anyone know why and how to possibly fix it?

let me know the same thing i am searching for.

the size over lifetime module is indeed the right one.
edit the curve to look like a rollercoaster going up then down, and it should work!
and make sure the emission module is set up to only emit one particle. i.e. a burst with a count of 1.

the only other thing to check is that the max particle size in the renderer module isn’t stopping the size from growing as big as you want. set it to a higher value and see if it makes a difference. that setting is to stop particles getting so big that they reduce gpu performance a lot.