How do you create particles, that only stay within a box collision?

Hi does anyone know how to create a particle (snow particles to be exact), to only happen within a box collision?

you can make an actor blueprint with a box collision component on it, and a particle system component on it. or in the event graph for said blueprint, you can spawn an emitter for the particle system

Hi thanks for your comment. I roughly understand what your saying, but some pics would really make it clear.

Sorry dont have time, but to get what i mean, drag the sparks particle system from starter content in your gaw, notice how they collide with everything. If you make an Actor blueprint, in te top left corner theres a green button that says add component. Add a collision box and a particle system to the blueprint. That should be all you have to do