How to get access to a specific UCX hull

Hello guys!

I’m curious if there’s a way to get a specific UCX convex hull (simple collision) while tracing lines from a character via Blueprint or C++. Each hull was created in the 3D software (and has its own name) and exported within the actual model FBX file. Where does the engine store the UCX hulls and how to get them?

I know I can use trigger boxes to ‘activate’ tracing in the specific area but it would be better to get even more precision. I’d like to trigger the animation when character trace hits certain parts of the mesh.

And the last question. By default — does trace by channel detect hits on simple collision or complex one?

Thanks in advance.