Debugging Variables in Visual Studio (?)

I'm on the nightly channel so that I can use the MSVC toolchain and debug my programs in Visual Studio. As of the latest nightly I can build my program and run it from VS. Breakpoints and stepping through my code work great, but I can't seem to view the values of local variables. Is this not supported yet? If not is there a rough idea of how long before its working?

Thanks!