Hello @Steven_D
Yes solutions proposed by @Roule_Thoune are working.
Thanks for your support and reached out to technical authorities.
Will be good if we can directly manage our weight with the same accuracy (0.1kg) on Companion.
I will continue to share proposal on Zwift improvement or Bug,
I have a lot of idea you can follow my posts 
Ride on !
See you on Zwift.