The path for it is available with mobile hdr yes, but I found it was bugged at the time. Not sure about in 5.5, I’m still on 5.4 because I’m using meta’s fork.
The other problem is it won’t work out of the box without you modifying scalability groups and possibly also device profile cvars. Also, you need to modify the DataDrivenPlatform.ini file in the engine config folder to enable distance fields on your platform.