check the version of the game, must be older than 0.6 (I guess).

The cheats that people list for "Unfinished Business" aren't actual for unfinished
business, they are for regular Jagged Alliance 2. UB is a standalone expansion pack and
You can tell because the only patch for Jagged Alliance 2 unfinished business is 1.01, and
regular jagged alliance 2 can be batched up to 1.6 or so.

I dont think there are cheats for UB, at least none that i have found.

u need to be in tactical screen aka the screen where u are fighting at. then hold control
and type gabbi. if this does not work then u may have a newer version then what it
explained for the game.