BTW, you should note that the moveBar method is lousy design...the other controller should control it. I was going to explain why, but my kid was screaming bloody murder so my thoughts were elsewhere - lol.
See the next tutorial where I fix it. But then I use it as an example for notifications. Notifications are super easy, but super important. I don't know what I was thinking.... lol
*** remember, I don't get paid for this