*IMPORTANT*
I have the steps listed here very accurately for those still having trouble. Please give thanks if i helped, although sunkist deserves it most.
1. place the hack script of your choice into the main arma 3 directory and name it corn or corn.sqf (if one doesnt work try the other, my file was originally "corn.sqf" that didn't work, so i changed to "corn")
2. Start arma 3 and join a server or editor (all you need in editor is a grenade, just to hurt yourself).
3. Once you have spawned, alt-tab out of the game and run the sunkist injector as adminastrator.
4. go back in game and get hurt by someone or something, and then activate your script hack by using the key specific to yours. (Mine for example is 'insert')
Hope this helped guys, make sure we dont abuse this injector or get it detected