Nicolas,
Thanks you are absolutely right. I mistakenly dredged up your initial post:
Design Studio 1.3 SDK - Creating a custom gauge component
Antonio AND you deserve credit, and Karol ported it over to our community package here:
Design Studio SDK: Gauge Component
However as it stands I believe you and Antonio it is safe to say haven't had the time to revisit this in a while so Karol or I can make some of these properties data bound all the same.
Thanks for reminding me about Antonio!