Library error: was not declared in this scope drive me Nuts(Kinda solved)

I'm happy to find some one that see the problem right away, but sorry to say it that way, but what you are saying sound Chinese to me :wink: I will put your name in the credit.lol

Can you correct my mistake and send it back. lol

So far I only made simple library, and this one seem to be one step further then what I've made so far.