NavMesh configuration for multiple size

I don’t succeed to configure nav mesh generation for 3 Agents of different height. (On the 4.7)

My three agents have the same radius (32) and the height of 64, 128 and 180.
The 64 sized agents should go under the 80 and higher ceiling.
The 128 and 180 sized agents under 192 and 256

Values I try to use:

Engine.NavigationMesh
CellSize (16)
CellHeight (8)
Agent Height (64)
Agent Max Height (180)

Engine.Navigationsystem
Agent 0: Default Query Extent (50 50 180) Agent Height (180)
Agent 1: Default Query Extent (50 50 128) Agent Height (128)
Agent 2: Default Query Extent (50 50 64) Agent Height (128)

And also:
Why have to define height value in Navigation Mesh and Navigation System ?
What is exactly DefaultQueryExtent ?

Thanks.

I believe the configuration on the nav mesh is just a default to be used when you don’t specify a particular supported agent on the nav system. So in your case I’d imagine it would not be relevant. The display will only show a navmesh that has ‘Enable Drawing’ checked - did you actually confirm that your smaller agents are unable to move where they should be?

Exact.
Indeed, the system works. the display does not show the reality.

My three agents compute a way according to their size.

I just changed the Agent 0 properties: Default Query Extent (50 50 180) Agent Height (175) else it does not walk under the ceiling at 192.

Yeah, I found the way to display all the layer. It’s the “Enable Drawing” option in all the RecastNavMesh actor on the map.

Thanks for this feature, it’s great !

I did create different navmeshes but now how do I specify which of my ai should use which navmesh? There is no “supported agent” option inside the character blueprint