Hello, I have modified the provided MPL.xml and MPL_left.xml, to mold a model with both hands in it ( i have attached the file, although it loads fine in the model). My objective is to have both hands in the model and control them using matlab. However when i run the command hx_robot_info, or hx_read_sensors i get error from mjhx "bad data size". mjhx('info') runs fine and provides me with the following: mjhx('info'), and some others work too, but i cannot control the hand. Thanks, and happy new year!