Adding N.A.S.T.Y. Stats to YEA Menus

I'm sorry, I've been at this for like, 4 hours and have tried searching up and down on this forum. I need to add the custom stats I made in N.A.S.T.Y. Extra Stats to my menus in Yanfly's Status Menu, Equip Menu and Probably Shop Options. It's called WP.

For the Status Menu:

I've tried adding them in the Parameters Window Settings, but that doesn't work. 

8 => [ :wp, Color.new(255, 240, 100), Color.new(255, 250, 200)],I looked further down and saw that anything regarding Drawing the Parameter graph was labelled 2..7, so I tried changing the 7 to an 8. Didn't work. When I try to run it, it gives me the error: 

Which tells me that making that 2..7 into 2..8 was a mistake. But, I don't know how to make them appear.

EDIT: Oh yeah, using N.A.S.T.Y. Extra Stats, Yanfly Scripts (Core Engine Ace, Status Menu Ace, Equip Engine Ace, and Shop Options.)