Other than Arrow keys, what else can you pick?

In the TFT WE, it has the event "Keyboard Event". I really wanted to use it and so far with Ant's tutorial with arrow keys, I've been able to make units move. But I also need to be able to press the "space bar' or other keys but I can't believe the TFT WE won't let you! I need someone to point me in the right direction so that I can press a key besides arrows!

Space bar is impossible, for the rest you can use abilities and just change their hotkeys to the key you want to detect

There's also the escape key which you get from cinematic skipped.

Yes, but I'm making a game where you don't select your hero, like in HeroRPG. So I'm not sure if that will work . But it does give me another idea

you can always keep a dummy unit selected which only has the command abilities.