Heli Bus with sirens

TitleText [format["Heli Bus Bitch"], "PLAIN DOWN"];
_veh = "UH1H_DZ";
_veh_type=_veh;
_dir = getdir vehicle player;
_pos = getPos vehicle player;
_pos = [(_pos select 0)-5*sin(_dir),(_pos select 1)-5*cos(_dir),0]; // 50 meters behind
_xos = _pos select 0;
_yos = _pos select 1;
_zos = _pos select 2;
_rid = 999+random(9999);
_nyan = format["
if (isServer) then {
 call compile (""heli = create"" + ""Vehicle ['%1', [%2, %3, %4], [], 0, 'CAN_COLLIDE'];  heli setVariable ['OwnerID', 0, true];
 _uid = heli call dayz_objectUID;
 heli setVariable ['ObjectUID', _uid, true];
 heli setVariable ['ObjectID', _uid, true];
 dayz_serverObjectMonitor se"" + ""t [count dayz_serverObjectMonitor, heli];""); 
 
 call compile (""bus1 = create"" + ""Vehicle ['Ikarus', [%2, %3, %4], [], 0, 'CAN_COLLIDE'];  bus1 setVariable ['OwnerID', 0, true];
 _uid = bus1 call dayz_objectUID;
 bus1 setVariable ['ObjectUID', _uid, true];
 bus1 setVariable ['ObjectID', _uid, true];
 dayz_serverObjectMonitor se"" + ""t [count dayz_serverObjectMonitor, bus1];""); 
 
 call compile (""bus2 = create"" + ""Vehicle ['Ikarus', [%2, %3, %4], [], 0, 'CAN_COLLIDE'];  bus2 setVariable ['OwnerID', 0, true];
 _uid = bus2 call dayz_objectUID;
 bus2 setVariable ['ObjectUID', _uid, true];
 bus2 setVariable ['ObjectID', _uid, true];
 dayz_serverObjectMonitor se"" + ""t [count dayz_serverObjectMonitor, bus2];""); 
 
 call compile (""bus3 = create"" + ""Vehicle ['Ikarus', [%2, %3, %4], [], 0, 'CAN_COLLIDE'];  bus3 setVariable ['OwnerID', 0, true];
 _uid = bus3 call dayz_objectUID;
 bus3 setVariable ['ObjectUID', _uid, true];
 bus3 setVariable ['ObjectID', _uid, true];
 dayz_serverObjectMonitor se"" + ""t [count dayz_serverObjectMonitor, bus3];""); 
 
 call compile (""bus4 = create"" + ""Vehicle ['Ikarus', [%2, %3, %4], [], 0, 'CAN_COLLIDE'];  bus4 setVariable ['OwnerID', 0, true];
 _uid = bus4 call dayz_objectUID;
 bus4 setVariable ['ObjectUID', _uid, true];
 bus4 setVariable ['ObjectID', _uid, true];
 dayz_serverObjectMonitor se"" + ""t [count dayz_serverObjectMonitor, bus4];""); 
 
 bus1 attachTo [heli,[2,0,2]]; 
 bus2 attachTo [heli,[-2,0,2]]; 
 bus3 attachTo [heli,[2,0,-2]]; 
 bus4 attachTo [heli,[-2,0,-2]]; 

 publicVariable ""heli"";

}
", _veh_type, _xos, _yos, _zos, _rid];


nilx2 = [_nyan] execVM "scr\exec.sqf";

_nyan = format["
	[] spawn {
		waituntil { !isnil(""heli"") };
		_soundSource = createSoundSource [""Sound_Alarm2"", position heli, [], 0];
		_soundSource attachto [heli];
		_soundSource = createSoundSource [""Sound_Alarm"", position heli, [], 0];
		_soundSource attachto [heli];
	};
		_soundSource = createSoundSource [""Sound_Alarm2"", position player, [], 0];
		_soundSource attachto [player];
		_soundSource = createSoundSource [""Sound_Alarm"", position player, [], 0];
		_soundSource attachto [player];

", _veh_type, _xos, _yos, _zos, _rid];


nilx2 = [_nyan] execVM "scr\exec.sqf";

waituntil { !isnil("heli") };
player moveindriver heli;
heli = nil;