Are Normal Maps on Paper 2D Tile Maps possible?

I have no problems referencing Normals for sprites, the Tile Map (and Tile Set) however do not allow for “additional Textures” that I can pick up in the Material Editor. I tried to add the normal via the Material itself, directly referencing it in the material itself. But that seems to have no effect. Am I missing something?

well then… consider this a feature request… ^^ … I got another one… can you make the calculated geometry of the paper2D collision a renderable. This would be AWESOME for cheap and quick level design reguarding dynamic shadows.