# F2kSel :
This may work but haven't tested.
null=this spawn {_this allowdamage false;waituntil {isTouchingGround _this };sleep 0.5;_this allowdamage true};
Thank you very much i shall go home and try this i'm not good at scripting but i'm trying to understand it so far
Added 1 minute later:
# hightower2015 :
I've been trying to do a similar thing today (high five!).
This script:
http://www.armaholic.com/page.php?id=25458
Its not exactly what you want, as it requires anyone you want to para jump to be in a vehicle. However, with some minor tweaks you can just pass the player to the script and it will sort out the rest. Bonus being that you can give your ai/ you backpacks.
Thank you very much Hightower. I shall look at it when home from work hopefully it'll work well for starting out falling in the air.