Forcing RPG fire into the sky?

For my next movie I want to simulate RPG's firing toward a chopper. However I do not want the RPG's to hit it. Is there any way to have an AI "doFire" or whatever at a certain point in the sky? What would the script look like?

you could try setpos some invisible target in the sky. MAP_Misc should have some

Conveniently enough in your case, if you force a unit to fire with the "fire" command, they'll always fire to the sky:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">MyUnit fire ["rpg7v","rpg7v"]

hope that helps,

Igor.