help: pCP on Rpi3 and DSD

I am trying to play DSD file on pCP and Rpi3.
The USB DAC of course plays DSD natively.

I enabled the DSDPlayer in the plugin section of the LMS (that runs on the very same Rpi3) and so DSD file (dsf) are recongized and played, but my DAC displays "PCM 352k" and not DSD.

what's wrong?

(of course, if I play the very same file with JRiver, the DAC displays DSD and not PCM)