Spawn in and add to Group

[1para{god-father} 105]

I spawn in a scud , but I wanted to also spawn in another vehicle and join it to the group how would i do that , so when i set the WP up they will both go.

// Spawn the scud launcher.
_ch = [_spot2, 0, "MAZ_543_SCUD_TK_EP1", EAST] call BIS_fnc_spawnVehicle;

[Desrat 0]

// Spawn the scud launcher.
_ch = [_spot2, 0, "MAZ_543_SCUD_TK_EP1", EAST] call BIS_fnc_spawnVehicle;

// _ch returns an array with [object,[array of crew],group]
_grp = _ch select 2;

// spawn more units in this group
_newvehicle = [position, direction, type, _grp] call BIS_fnc_spawnVehicle;

[1para{god-father} 105]

ahh many thanks