MArcomage

Since "weak" generally is an adjective, it would never have an s at the end. Even when used as a noun, meaning those who are weak, it is already in the plural without an s.

thanks for the lesson, my english is still improoving. any suggestion for a better name?

Just replace weaks with weak and all is well.

Also, pardon my nitpicking. I'm a teacher, so I'm conditioned to spot such things.

No problem, i'm a teacher too