iOS devices doens't want to sync plays

Hey everybody,

I have this problem since iOS came up .. My iPad 4 (32), iPhone 5 (16) and iPod 5 (32) doesn't want to sync the play counts to my Mac.

I've selected from iTunes > Preferences > Sharing - the Home sharing computers and devices update play counts ... but nothing happens. I was looking in the web for some solutions but I couldn't find anything which works.

Someone can help?

Thanks