Please enable us to directly associate Global Parameters to the Floor category 'Height Offset from Level' built-in property. This can be done for the similar Ceilings category (since Revit v2016 R2). This would allow us to change the floor height offset for multiple floors with only one number change - invaluable for changing floor set-downs on large project (eg. if a balcony floor set-down changes from 50mm to 75mm, for every balcony on a project). Currently we have to select every floor slab individually.