Your problem is that setting up keymap files is not as easy as copying a ‘2’ ---> ‘Fireball.on.Blastonce.target’ into a txt file.

The actual text files have something that looks like the following in them: k(192.0.0):hs(` - One)
where 192.0.0 is a number representing the key with modifiers, and ` - One is the keymap name.

I suggest setting them up via keyclone to start out with.
In keyclone, go to options (settings? I'm at work right now). Go to keymaps and start making a new one in there.