Vertical navmesh for walking vertically?

Hello, I need a certain AI character to walk on walls, is there a way to enable him doing so?
I tried rotating the navmesh bounds, but it doesn’t work, the walls are not green. Also I can’t make him walk on the ceiling, navmesh covers only the top-side of the mesh
Please help!

Bump please

As far as I know, UE4 doesn’t support that yet. You’ll have to do it yourself. You could create a plugin for that and share it or put it in the marketplace.