[HELP] AI paradrop with Global Mobilization

[kibaBG 54]

Hi guys, I have a little problem with paradropping enemy AI. They open their parachutes fine but half of them die when touching ground. They are dropped (spawned) at 300m and parachute opening happens at 200m. Here is the code: 

_paraPos = (getPosATL DROPPLANE);
_paraPos set [2, 300];
PARAMEN = [_paraPos, EAST, [ 
"gm_gc_army_squadleader_mpiak74n_80_win", 
"gm_gc_army_rifleman_mpiak74n_80_win", 
"gm_gc_army_rifleman_mpiak74n_80_win", 
"gm_gc_army_machinegunner_lmgrpk74_80_win", 
"gm_gc_army_machinegunner_assistant_mpiak74n_lmgrpk74_80_win", 
"gm_gc_army_antitank_mpiak74n_rpg7_80_win", 
"gm_gc_army_antitank_assistant_mpiak74n_rpg7_80_win", 
"gm_gc_army_rifleman_mpiak74n_80_win", 
"gm_gc_army_rifleman_mpiak74n_80_win" 
]] call BIS_fnc_spawnGroup; 
PARAMEN deleteGroupWhenEmpty true;
{_x addBackpack "gm_backpack_t10_parachute"; 
} foreach units PARAMEN;
0 = _x spawn {
waitUntil {getPosATL _this select 2 < 200}; 
_x action ["openParachute"];
sleep 30;
};
_stalking = [PARAMEN,  group (allPlayers select 0)] spawn BIS_fnc_stalk;