try this one, it works for me...just make sure your Ejecting Group and Chopper are in seperate groups... 
exec it with ["NameofChopper", "NameofGroup"] exec "eject.sqs" 
eject.sqs is... 
<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE"> 
_Heli = _This select 0 
_group = _This select 1 
_aunits = (units _group) 
_heli setspeedmode "limited" 
~2 
_heli flyinheight 130 
~1 
@ ((getpos _heli) select 2 ) > 100 
_i = 0 
_j = count _aunits 
#Here 
(_aunits select _i) action ["EJECT",_heli] 
unassignvehicle (_aunits select _i) 
_i=_i+1 
~0.5 
?_j>_i:goto "Here" 
_heli forcespeed 80 
~2 
_heli setspeedmode "normal" 
exit