Unreal Engine 4.25 Preview

I like the changes in the control rig, except you can no longer pass in or return variables?

I see the variable options to get and set but before you could choose them to be exposed as input or output and I don’t see those options. Without input or output it seems like the control rig has pretty limited value… I thought the big value was to abstract away complicated animation calculations, which would need the input variables to drive it?