AI group parachute behind player?

[callihn 10]

Trying to figure out why the following script is not working and I can not seem to figure it out, surely someone here is smart enough to spot what is wrong with it, it appears fairly simple:

// by Xeno
#include "x_setup.sqf"
private ["_grp_player","_units_player","_pos_p","_obj_para","_veloc","_dir","_parachute","_units_formation"];
_grp_player = group player;
_units_player = units _grp_player;
if ((_units_player call XfGetAliveUnits) > 0) then {
_units_formation = formationMembers player;
if (count _this == 0) then {
 _pos_p = position player;
 _pos_p = [_pos_p select 0, _pos_p select 1, 0];
 {if (!isPlayer _x && vehicle _x == _x && _x distance _pos_p > 500) then {_x setPos _pos_p}} forEach _units_formation;
} else {
 _pos_p = _this select 0;
 _veloc = _this select 1;
 _dir = _this select 2;
 _parachute = d_own_side call XfGetParachuteSide;
  {
   if (!isPlayer _x && vehicle _x == _x && _x distance _pos_p > 500) then {
    _obj_para = createVehicle [_parachute, [0,0,100], [], 0, "FLY"];
    _obj_para setPos _pos_p;
    _obj_para setDir _dir;
    _obj_para setVelocity _veloc;
    _x moveInDriver _obj_para;
    [_x] spawn {
     private ["_unit"];
     _unit = _this select 0;
     sleep 0.8321;
     waitUntil {sleep 0.111;(vehicle _unit == _unit || !alive _unit)};
      if (alive _unit) then {
       if (position _unit select 2 > 1) then {
        [_unit, 0] call XfSetHeight;
       };
      };
    };
   };
  } forEach _units_formation;
};
};

It is called with this:

[position player, velocity player, direction player] execVM "x_scripts\x_moveai.sqf

Anyone see the problem?

Edited September 11, 2010 by callihn