Getting an error with usdzaudioimport

Hello I am trying to figure out what I am doing wrong. I am trying to import audio into the .usdz file, followed the "usdzaudioimport -h" with the params, and I am getting this   "Error: unexpected parameter -auralMode for argument --audio" ?? I removed it( then getting the you need parameters), used only one parameter still getting unexpected parameter or for auralMode or playbackMode!? downloaded the latest 3 times, reinstall/verified Python version and installation, the PATH, etc... It is driving nuts, being the first time I use this tool. I am hoping someone smarter than me can "slap me behind the head" and point out the obvious that I cannot see!! LOL

Here is my command, any hint and things to try will be more than welcome.

Thank you very much!

here the command I used and the result:

% usdzaudioimport /Users/macuser/Documents/griffon_v2.usdz /Users/macuser/Documents/griffon_v2b.usdz --audio /Users/macuser/Documents/CH-146_Griffon_webAr.mp3 -auralMode spatial -playbackMode onceFromStart

usdzaudioimport 0.01   Error: unexpected parameter -auralMode for argument --audio For more information, run "usdzaudioimport -h"