VS2017 MVVM and Prism /BindableBase / RaisePropertyChanged();

I have a VS2017 UWP solution that uses MVVM and communicate with RS232. I can update the GUI and get values changed on RaisePropertyChanged(); When the RS232 communication is receiving data this will be in another thread. I get the data from the RS232 and tries to update the Property Kredit. When i call RaisePropertyChanged(); to get the data to the GUI I get this message. "The application called an interface that was marshalled for a different thread....." So I need to get this "invoked/dispached" to the GUI thread.. Because this is a RS232 communication the change of code is easiest to be done in TeamViewer with my PC.