Trainers don't generally work by regional versions, though there are a few exceptions. In this case, though, the only differences is the distribution method by which you got the game.
--------------------------------------------------------------------------- "Remember the good old days when you could just slap Omni-Gel on everything?" - Shepard, ME2
"Not right now. Trying to determine how Scale Itch got aboard. Sexually transmitted disease carried only by Varren..... Implications unpleasant." - Mordin, ME2
since the aus version had to be altered so was thinking the trainers wouldnt work but i did download the steam version of the trainer. It would say activated when i hit F1 on main menu then in game it would say avtivated when i used a cheat but none of the cheats worked.
--------------------------------------------------------------------------- "Remember the good old days when you could just slap Omni-Gel on everything?" - Shepard, ME2
"Not right now. Trying to determine how Scale Itch got aboard. Sexually transmitted disease carried only by Varren..... Implications unpleasant." - Mordin, ME2