Photoshop: Flow shortcut for Wacom tablet Touch Ring

I was asked by Adobe support to post this on this wishform list.  Currently the wacom touch ring can operate brush size and hardness but not flow (or opacity I assume) because there is no continuous short cut that can respond to the ring control.  The microsoft surface dial DOES have the ability to control size hardness, flow and opacity but adobe support reports that "the Microsoft Dial has beendeveloped as completely different integration so it has a completely differentuser interface and features altogether" (whatever that actually means!) . The point is that Adobe and microsoft must have identified a continuous variable/shortcut to control opacity and flow.  For photoshop tablet users, it would be very useful to be able to assign flow to a touchring function and whoever in Adobe worked with microsoft on the Surface Dial know how to do it.  It would be a great feature - please consider adding this