3DAudio Nuendo/Flux Spat 3.0 for Ambisonic B Format encoding

Is anyone using Nuendo 7 and the Flux Spat plugin to encode 5.1 (L_R_C_LFE_Ls_Rs) to Ambisonic B. If so, Could you share your experience, setup and what the decode is FuMu (WXYZ) or ambiX( WYZX).

thanks in advance,

Biol