Need help, again :P

[The chaser]

You've put "player" instead of "Player". "Player" is always this way, never forget it.
And, by the lever, you could do this:

if (alState==1) //When lever is used
{
if(GetLocalVarInt("Var_coals")==3)//////This is a counter. Every coal should add 1 to it. This represents that there's a missing coal.
{
///Stuff like saying there isn't enough coal.
}
if(GetLocalVarInt("Var_coals")==4)//If the number of coals is 4, of course
{
//Create particles, sounds and stuff.
SetLocalVarInt("Var_coals", 0);///This will put the coals variable to 0, and it will make the lever unuseful another time. +, the coals couldn't collapse another time with the area, so the variable would be this way forever.
}

Hope that helped.

Wait a Sec!How did you know that there is 3 coals inside already???(if(GetLocalVarInt("Var_coals")==3))
I would prefer instead of (if(GetLocalVarInt("Var_coals")==3)//////This is a counter. Every coal
should add 1 to it. This represents that there's a missing coal.
{
///Stuff like saying there isn't enough coal.
}
if(GetLocalVarInt("Var_coals")==4)//If the number of coals is 4, of course
{
//Create particles, sounds and stuff.
SetLocalVarInt("Var_coals",
0);///This will put the coals variable to 0, and it will make the lever
unuseful another time. +, the coals couldn't collapse another time with
the area, so the variable would be this way forever.
})
Something like that:

if(GetLocalVarInt("Var_coals")<3)//////This is a counter. Every coal
should add 1 to it. This represents that there's a missing coal.
{
///Stuff like saying there isn't enough coal.
}
else if(GetLocalVarInt("Var_coals")==4) //If the number of coals is 4, of course
{
SetLeverInteractionDisablesStuck(string& asName, bool abX);//Make the appropriate changes
//Create particles, sounds and stuff.
}
else
{
//Type a message saying that there is too many coals
}

I prefer this way but correct me if I'm wrong or my way isn't good enough

I think it's ok. You've just put a "SetLeverInteractionDisablesStuck". And, the coals: The number of coals are usually put in are four, so I thought that maybe you did the same