AA missile from air script

null=[]spawn{
if((vehicle player iskindof "Plane") && (side player == west))then{

_i=10000;


  if (( getposatl vehicle player) select 2 > 200) then{
   private _Z=( getposatl vehicle player) select 2;

  for "_i" from 0 to 4 do{
   if (( getposatl vehicle player) select 2 > 200) then{

    private _position = vehicle player getRelPos [900,180];
    private _newPos =_position vectorAdd [0,0,_Z+1000];


    _missileDir = _newpos vectorFromTo getPosATL vehicle player;
    _missile = createVehicle ["ammo_Missile_rim162", _newpos, [], 0, "CAN_COLLIDE"];
    _missile setVectorDirAndUp [_missileDir, [0,0,-1]];

    [_missile, vehicle player] spawn {
    params ["_missile", "_tgt"];
    sleep 0.1;
    _missile setMissileTarget _tgt;
          };
    sleep 4;
    }else{break;};
  };
  sleep 7;

    }else{};


deletevehicle p1;}
};