Can I export h264 with 10 bits color depth ?

Sorry for bad english.

I see an interesting question on a french forum. Looking for answer I don't understand if it's possible to export in H264 with 2020HLG and 10 bits colors. More, I don't understand very well the profile parameter for H264.

I try to understand whith the doc of compressor and things like this :

http://blog.mediacoderhq.com/h264-profiles-and-levels/

https://www.design-reuse.com/articles/20776/h-264-high-profile-codec-video.html

When I read thing like this, I understand h264 high profile is 4:2:0 8bits (Hip) but maybe it's Hi422P with 10bits.

it's confuse.

So more simply can I export and how 4k HDR in h264 in FCPX with compressor with a clear information about color depth : 10 bits ?

Thank's