Spawning vehicles and using the names I give them - questions

[Lucky44 13]

Here's what I'm trying to do: spawn a vehicle, and then every 3 seconds, check to see if it's taken 25% damage or more, and if so, setDamage to 100% on it.

Here's what I'm trying in a script that's called by a trigger on map:

_tankSquad2 = createGroup EAST;  
Tank4 = [(getMarkerPos "mrk_pos1"), 90, "T34_TK_EP1", _tankSquad2] call bis_fnc_spawnvehicle; 
publicVariable "Tank4";

_damTot = (damage Tank4);
while _damTot < 1 do {
if ((damage Tank4) >= .25) then {Tank4 SetDamage 1};
sleep 3;
_damTot = (damage Tank4); // update value to current level
};

This all works fine on a vehicle placed on the map in editor, and the spawning works fine, but after spawning, it creates an "Error damage: Type Array, expected Object". Actually, at the PV line, if I used that line, it throws the error there ("Type Array, expected Object").

I assume that the name I'm giving the tank (e.g., Tank4) is not getting associated with the tank object. What am I doing wrong there?

Edited March 18, 2012 by Lucky44

[fencr0c 10]

BIS_fnc_spawnVehicle returns an array, second element of array is the vehicle created.

[Craig_VG 20]

So it would be:

_damTot = (damage (Tank4 select 1));

[Lucky44 13]

Gah! Thank you both so much. I wasted a couple hours on that...duh.

---------- Post added at 04:50 PM ---------- Previous post was at 04:37 PM ----------

Now wait a second. That got me thinking: in the first line of my code above, I createGroup and give it the name _TankSquad2. In the BIS_fnc_SpawnVehicle line, I refer to that group. I thought I was assigning the new vehicle to that group. Which seems to be right. But is "Tank4" also a name for the group? Or is it just an array of the UNITS in the group...must be that, huh?

OK, I could just not post this, but I think I'll leave it for future people who might be as confused as I've been :)

---------- Post added at 05:23 PM ---------- Previous post was at 04:50 PM ----------

And here's another twist: the array created by BIS_fnc_spawnVehicle is the array of units (crewmen) in the vehicle.

The FIRST element of the array, i.e., (tank4 select 0), is actually the VEHICLE.

---------- Post added at 05:41 PM ---------- Previous post was at 05:23 PM ----------

So here's what my final code looks like, cleaned up a bit:

_veh = (tank4 select 0); // set the name of the vehicle Group Array, from BIS_fnc_spawnVehicle, here

_damTot = damage _veh;
while {_damTot < 1} do {
if ((damage _veh) >=0.20) then {_veh SetDamage 1}; // set this level so that if there's enough damage for crew to bail out, vehicle will be destroyed
sleep 3;
_damTot = (damage _veh);
};

Thanks again for the help!