stair numbering

[Anonymous]

I have an irregular stair which I need to number and unfortunately numbring doesn't work in such types of stairs. Does anyone know a way around it to number stairs. bear in mind that the stair consists of three various arcs. 

The file is  attached for perusal

[ToanDN · Accepted solution]

Are they stairs by sketch? I don't think stair numbering works for such.
You may have to rebuild them using stair by components, then draw boundary
and risers manually in sketch mode.