the instructions instruction you to attack something and either give or receive damage before the option will work.
its not going to happen. look how the game has you select a single talent by the way it's CODED when you level up. there isn't going to be any cheats, trainers, or console commands that give you unlimited talent points. you have to select ONE talent on PURPOSE because the game is hard programmed to do that. the best option is to just keep using the instant level up option over and over and enter the leveling window over and over and pick more talents...
I have no way to modify this as of late. if some other person found a way to hack this or script it then kudos to them, but we aren't going to add any more options to this game, especially since many people already have issues with their game producing multiple code locations which is making it difficult for the trainer to access the proper code AS IT IS..