[SCRIPT] So many errors

[Adrianis]

void OnStart()
{
AddEntityCollideCallback("Player", "Area_VisionTrigger", "Script_VisionTrigger", false, 0);
}

void OnEnter()
{

}

void Script_VisionTrigger (string &in asParent, string &in asChild, int alState)
{
if(alState == 1)
{
PlayMusic("vision_music", true, 1, 6, 7, false);
CreateParticleSystemAtEntity("Area_VisionWind", "ps_dust_whirl.ps", "Area_VisionWind", false);
SetLampLit("candlestick_floor_1", false, true);
SetLampLit("candle_floor_small_1", false, true);
PlaySoundAtEntity("blow", "general_wind_whirl", "Player", 0.0f, false);

AddTimer("fadescreen", 18.1f, "timer_fade");
AddTimer("visionstarter", 19.2f, "timer_vision_start");
AddTimer("visionender", 203.53f, "timer_vision_end");
SetLocalVarInt("IsPlayerInArea", 1); // where 1 is yes and 0 is no
}
if(alState == -1)
{
StopMusic(3, 7);
SetLocalVarInt("IsPlayerInArea", 0); // where 1 is yes and 0 is no
}
}

void Potential_Timer_Function(string &in strTimer)
{
if (GetLocalVarInt("IsPlayerInArea") == 1)
{
// do the stuff
}
}

void OnLeave()
{

}

This is all assuming you want those timers to expire with nothing happening if the player has left that area.
(This is also all assuming you know that you haven't written any functions for those timer callbacks )

If you want those timers to work even if you have left the area, well they should do now!

[disclaimer: this is provided untested, therefore I will not be held liable for damage to computer and/or persons including but not limited to dramatic loss of life etc.]