Change direction of flying object ?

[kibaBG 49]

Hi, I cannot find what command to use to make an attack heli to face certain position while flying with "SAD" waypoint. I spawn it and add waypoints with this

 

/*
_mrk is the flag marker, string
_heli is the attack helicopter className, string 
_arrival is the time from zone activation to spawning the attack heli, integer
_force is how many attack helicopter will come one after another, integer
*/
params ["_mrk", "_heli","_arrival","_force"];
for "_i" from 0 to _force do {
sleep _arrival;
deleteVehicle attackHeli;
{deleteVehicle _x} forEach units attackHeliGRP; 
_atkHeliPos = [[[(getMarkerPos _mrk),4000]], [[(getMarkerPos _mrk),3000]]] call BIS_fnc_randomPos;
_attackPosA = [[[(getMarkerPos _mrk),400]], []] call BIS_fnc_randomPos;
_attackPosA set [2, 200];
_attackPosB = [[[(getMarkerPos _mrk),400]], []] call BIS_fnc_randomPos;
_attackPosB set [2, 200];
_attackPosC = [[[(getMarkerPos _mrk),400]], []] call BIS_fnc_randomPos;
_attackPosC set [2, 200];
private _delPos = [[[(getMarkerPos _mrk),4000]], [[(getMarkerPos _mrk),3000]]] call BIS_fnc_randomPos;
_delPos set [2, 200];
attackHeliGRP = createGroup [west, true];
attackHeli = createVehicle [_heli, _atkHeliPos, [], 0, "FLY"];
attackHeliGRP createVehicleCrew attackHeli;
attackHeliGRP setBehaviourStrong "COMBAT";
attackHeli flyInHeight 200;
attackHeli limitSpeed 100;
private _wp1 = attackHeliGRP addWaypoint [_attackPosA, 0];
_wp1 setWaypointType "SAD";
_wp1 setWaypointTimeout [60, 120, 60];
private _wp2 = attackHeliGRP addWaypoint [_attackPosB, 0];
_wp2 setWaypointType "SAD";
_wp2 setWaypointTimeout [60, 120, 60];
private _wp3 = attackHeliGRP addWaypoint [_attackPosC, 0];
_wp3 setWaypointType "SAD";
_wp3 setWaypointTimeout [60, 120, 60];
private _wp3 = attackHeliGRP addWaypoint [_delPos, 0];
_wp3 setWaypointType "MOVE";
_wp3 setWaypointStatements ["true", "deleteVehicleCrew attackHeli; deleteVehicle attackHeli; deleteGroup attackHeliGRP;"];
sleep _arrival;
};

I wonder how to change direction if flying object so when the AH64 wait for the next waypoint to face the position it has to defend and the gunner can search for infantry targets, etc.