Help ! Using variables (SOLVED)

[Darkfire]

Hey ! I'm making a level in which I want at first to have lots (302!) of fog particles, and later rain particles. The second part works fine, but for some reason I can't delete these fog particles. Also, running the map doesn't end with a crash. Here's what I came up with:

void OnEnter()
{

SetLocalVarInt("FogVar", 0);


if(GetGlobalVarInt("RainVariable") > 0) ///this is a trigger, the variable is added in a different level///
{

if(GetLocalVarInt("FogVar") < 302)
{
AddLocalVarInt("FogVar", 1);
DestroyParticleSystem("ParticleSystem_" + GetLocalVarInt("FogVar"));
}
///here's stuff that makes the rain happen//
}
}