never mind, I found filtering, I'm working on the lighting now, and the actual rain on the T. rex. The rain falls just fine, it falls using expressions (required by the project guidelines), and there's a collision event when it hits the rex. my problem is that when it hits it turns into water droplets that should run along his skin, but it doesn't, some do, but most fall through and collect on the inside of the model. is there a way to fix this?