Does Navigation mesh works on Z axis?

I’ve just started to learn Unreal Engine 4.26.2 and I have added a Navigation Mesh Volume to a test level to know if it works on this axis.

This is a simple level with a nav mesh bounds volume and two Static Mesh Actors:

But, when I press P key it doesn’t appear green,on Z Axis, only on the X axis.

Does the Nav Mesh Bounds Volume work on Z axis?

My AI pawns will move on Z axis (up and down) on a restricted area in X axis.

Unfortunately, Unreal Engine does not support vertical Nav-Meshes by default. Judging by your previous edits, you will most likely need to make your game on the X-Y axis.

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Yes, I thought to do it the way you suggest laying the table before launch.