Generate a NavMesh on the XY plane

I am making a 2D game and I want to use a NavMesh/NavMeshAgent.
The Navmesh only generates if the mesh is on the XZ plane, is there a way to generate the Navmesh on the XY plane as well? Can this be done in 4.3?
Thanks!

I have the same question…

:frowning:

I have the same question!

Tada! )

it seems like this is not available any more, i have the same issue, what might this have been?