This seems pretty obvious but the Garmin Stair Stepper activity doesn't allow the entry of the number of stairs or floors you ascended. It would seem that any Garmin watch that counts steps could convert the steps to stair steps and get an approximation of the number of stairs and vertical rise a session had. This information should then go into your daily floors climbed number. Outside of it automatically doing it, it would seem to make sense to allow manual entry of the information.