Binding Header in TabItem to child property in the ViewModel

[Kenneth Haugland]

I have a standard C#, WPF, and PRISM project, and I wanted to have one module per tab item. But I want to bind the header of a property in the ViewModel directly to the parent TabItem. I tried this (among other things such as Content.DataContext.Message etc.) :

I have a distinct feeling I have done this before, but I cannot figure it out at the moment, so any suggestions?