Particle Effects

[Kydoimos 915]

Hi all - I'm trying to create a simple dust effect (like the dust trails left behind a vehicle on a road):

_Sand = "#particlesource" createVehicle [10,10,10];
_Sand setParticleClass  "SmokeBig";
_Sand attachTo [player, [0,0,2=0]];

But for some reason, no matter which particle effect I try, it's not appearing in-game. Any thoughts anyone? TBH, I'm not sure if I'm implementing it correctly...