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How to find a path with dynamic obstacle in NavMesh?

As the following pic shows, a Character want to move from Point A to Point B, but there’re three other Characters are obstructing between A and B, how to find a path between Point A and Point B?

Even I set Project Settings -> Navigation Mesh -> Runtime Generation to Dynamic, but it doesn’t work.

When visualize the Nav Mesh at runtime, the three Characters of obstructing did not modify Nav Mesh.

it doesn’t work because you need to activate the affect navigation mesh and also it’s not a good idea for alot of ai’s

Thx for your suggestion! How to activate the affect navigation mesh?

There is the detour AI crowd controller. You can try with that. Just use the detour AI crowd controller instead of the normal AI controller.
https://youtube.com/watch?v=aqA30w4N5GE
https://www.youtube.com/watch?v=nZxy9pLStpM

[QUOTE=Shogo999;569771]
There is the detour AI crowd controller. You can try with that. Just use the detour AI crowd controller instead of the normal AI controller.
https://youtube.com/watch?v=aqA30w4N5GEhttps://youtube.com/watch/nZxy9pLStpM[/QUOTE]

Sorry for delay. Thx so much for your suggestion.