Trying to add this to init of the supply drops:
_supplybox = _this select 0;

for "_x" from 1 to 10 do
{
_supplyLight = "Chemlight_green" createVehicle (position _supplybox);
_supplyLight attachTo [_supplybox, [0,0,0]];
_supplySmoke = "SmokeShellGreen" createVehicle (position _supplybox);
_supplySmoke attachTo [_supplybox, [0,0,0]];
sleep 30;
};

Just wondering where (I cannot find anywhere).

Yes, yes I lost my supplies :(

There are only one possibility using CBA.

description.ext

class Extended_Init_EventHandlers {
class Box_NATO_AmmoVeh_F {
	init = "(_this select 0) call (compile preprocessFileLineNumbers 'supplysmoke.sqf')";
     };
};

supplysmoke.sqf

private ["_crate", "_supplyLight", "_supplySmoke"];
_crate = _this;
[0, {
    _crate = _this;
_supplyLight = "NVG_TargetW" createVehicle (position _crate);
_supplyLight attachTo [_crate, [0,0,0]];
while {(player distance _crate) > 150} do {
_supplySmoke = "SmokeShellGreen" createVehicle (position _crate);
_supplySmoke attachTo [_crate, [0,0,0]];
sleep 30;
};
}, _crate] call CBA_fnc_globalExecute;

All: -2
ClientsOnly: -1
ServerOnly: 0

Sorry I am a bit confused on this.

How does this give all the different crates a smoke and chemlight ?

I'm trying to get a smoke and chemlight on the crates dropped by ALiVE. Nothing else.

Just dealing with the first bit - does "Box_NATO_AmmoVeh_F" in description.ext refer to the square ALiVE crates somehow ?

Also just for future reference, if I were to do a normal drop of an ammo box and also have something in the "init" field in the editor - which runs first?

Thanks.

There are always 2 crates. If you call for any crate this will be inside NATO Vehicle Ammo Box (Box_NATO_AmmoVeh_F), always.
You need to enable player logistic actions to unpack this.

Got it working, thank you. ;)

Is there any "easy" (haha) way to add a NEW supply box to the list - so I am not changing the stock standard ones already there ?

It occurs to me that adding in a box with tires (for AGM) etc might be useful ?

Only if you use AGM addon and R3F Logistic. If not just delete those lines.

Crates are part of configfile >> "CfgVehicles" you need to add any addon/scripts which adding custom crates.