Keyboard + Mouse configuration can't get past the tutorial

I'm using a keyboard and mouse to play skate. but there's not keyboard key bound to controller Y for me to play! I can't even get past this point in the tutorial. I used VJoy to enter the game, and then disabled it to use my keyboard, which was working up until this point. There are keys for all the other buttons, just not this one.

Any help is appreciated! Thanks all!