Detecting if an object exisits?

I am looking for a way to detect if an object exists, and if it does to delete it.

For example, I spawn a helo, and later on in a script I want it to detect if it exists and if so delete it.

I have searched to no avale.

Assuming you have a reference to the object, i.e. by a variable such as myHelo, you can check if it exists and then delete it by doing the following:

if (!isNull(myHelo)) then {deleteVehicle(myHelo);};

vary nice thank you

I have ran in to a bit of a snag, this has worked wonders for me, how ever I am confused on how to check and delete any created Markers, Way points or what have you.

Basically this is a Recycle script that Cleans all the Variables, and removes all script created objects.

This is what it looks like:

caller = _this select 0; 
_WpGrp = group Spook;

	caller removeaction menu;
	caller removeaction Men1;
	caller removeaction Men2;
	caller removeaction Men3;
	caller removeaction Men4;
	caller removeaction Men5;
	caller removeaction Men6;

	caller removeaction Menex1;
	caller removeaction Menex2;
	caller removeaction Menex3;
	caller removeaction Menex4;
	caller removeaction Menex5;


	if (!isNull(SpokLz)) then {deleteVehicle(SpokLz);};	
	if (!isNull(_Spokmok0)) then {deleteVehicle(_Spokmok0);};
	if (!isNull(_Spokmok1)) then {deleteVehicle(_Spokmok1);};
	if (!isNull(_Spokmok2)) then {deleteVehicle(_Spokmok2);};
	if (!isNull(_Spokmok3)) then {deleteVehicle(_Spokmok3);};
	if (!isNull(_Spokmok4)) then {deleteVehicle(_Spokmok4);};
	if (!isNull(_Spokmok5)) then {deleteVehicle(_Spokmok5);};
	if (!isNull(_Spokmok6)) then {deleteVehicle(_Spokmok6);};
	if (!isNull(_Spokmok7)) then {deleteVehicle(_Spokmok7);};

	if (!isNull(_ReconMapPos)) then {deleteMarker _ReconMapPos;};
	if (!isNull(_ReconStartM)) then {deleteMarker _ReconStartM;};
	if (!isNull(_ReconEndM)) then {deleteMarker _ReconEndM;};

	if (!isNull(_waypoint1)) then {deleteWaypoint [_WpGrp, 1];};
	if (!isNull(_waypoint2)) then {deleteWaypoint [_WpGrp, 2];};
	if (!isNull(_waypoint3)) then {deleteWaypoint [_WpGrp, 3];};


_WpGrp = group _grpNull;
_WpPos = 0;
GetClick = true;

exit;
[/Code]

if (getMarkerColor "mrk1" == "ColorOPFOR") then {deleteMarker "mrk1";};