How to build Vomitory Railings at Top of Sloped Walls

I am working on a stadium as-built Revit model and I found myself in a dilemma of what to do to get a sloped wall to accept a railing. What I ended up doing was creating a slab in plan on top of the wall and sloping it to match the wall slope and then drawing my railing on that floor slab and changing the option of slope to match the host.