[SIMPLE] Variables

[FlawlessHappiness]

Ok, so I'm having a little trouble with some variable-scripts, that I haven't tried before. It looks like this:

void WoodCreakStart(string &in asParent, string &in asChild, int alState)
{
AddTimer("WoodCreakStart", 5, "WoodCreak");
}

void WoodCreak(string &in asTimer)
{
if(asTimer == "WoodCreakStart")
{
StartScreenShake(0.03f, 5.0f, 2.0f, 2.0f);
PlaySoundAtEntity("Creak", "00_creak.snt", "Player", 2.0f, false);
AddTimer("Creak_1", 0.5f, "WoodCreak");
}

if(asTimer == "Creak_1")
{
if(GetLocalVarInt("CreakVar") < 7)
{
CreateParticleSystemAtEntity("CreakDust_"+CreakVar, "ps_dust_drilling.ps", "WoodCreakParticle_"+CreakVar, false);
AddLocalVarInt("CreakVar", 1);
AddTimer("Creak_1", 0.1f, "WoodCreak");
}
}
}

Simply, what happens is that when I enter the area, dust should be drilling from each 6 areas once.
But it should happen like this:
Dust from area1
Wait 0.1 seconds
Dust from area2
Wait 0.1 seconds

and so on

This is where i have the trouble:

if(asTimer == "Creak_1")
{
if(GetLocalVarInt("CreakVar") < 7)
{
CreateParticleSystemAtEntity("CreakDust_"+CreakVar, "ps_dust_drilling.ps", "WoodCreakParticle_"+CreakVar, false);
AddLocalVarInt("CreakVar", 1);
AddTimer("Creak_1", 0.1f, "WoodCreak");
}
}

It says CreakVar is not declared... but should it be, when i use it like +CreakVar?