How to use certain mission code correctly

[Polymath820 11]

1. How do I get a function to run?

2. How do I correctly compile a piece of code?

Because this code:

screwed = {

_null = _this

_CreateBAmbient = createGroup west;

_getMarkerPosition = markerPos "FormVehAnchor1";

for [{_i=0},{_i<=3},{_i=_i+1}] do {

_UnitsObj = createVehicle ["B_Heli_Transport_01_camo_F",_getMarkerPosition,"",0,"FLY"];

};

};

does not work even if I have in the init.sqf:

_fnc = Compile preprocessFileLineNumbers "AmbientHelicopter.sqf";

it won't run the script when I call the "screwed" function at all it just says "undefined variable";

3. How do I use the preprocessFileLineNumbers

4. Does arma 3 ever get code "ghosts" or "ghosts in the machine" from repeated running of a script?

5. Is there anyway to destroy a sound after it has been created on a playSound3D position? When a vehicle gets destroyed?

Edited January 29, 2014 by Polymath820