Particle System HELP NEEDED =3

[Simpanra]

Hello everyone =) A really quick question form me, I would really like to know the script function for activating a particle system. By this i mean; I have an AddEntityCollideCallback which calls for; Give sanity damage, play sound at entity (the entity is a door) and finally i want the script for making dust appear infront of the door (to give the appearance of something hitting the door from the far side). I have seen this done before and i tried to make the particle system appear by setting it as inactive in the editor and then using a SetEntityActive function to spawn it. I have tested the map and the sanity damage is dealt and the sound effect does play (though really quietly....speaking of which, does anyone know how to increase the volume of a sound effect?) but the particle system just doesn't appear =(

All help is much appreciated and if you could help me with increasing the volume of a sound effect then that would be great too ^_^

Thanks!!!!

Edd,