Amazfit Watch faces

È possibile creare una whatcface per diabetici dove si può monitorare il glucosio tramite bluetooth?

Specify, what device are you talking about?

I think many diabetics would appreciate to see current glicemie and graph on watch face on Amazfit GTS with app xdrip+ as it is possible on e.g. Amazfit Stratos or Pace . Is it possible create this watch face also for GTS?

I don't think is possible for the GTS. Pace and Stratos run on a modified android OS firmware, Huami doesn't support apps on these watches but the community managed to create an sideload custom apps. GTS on the other hand is more similar to the Mi Band 4 than to the Stratos, basically it's only a fitness band in watch format, it has a complete custom os, and can't run apps, specially always connected apps, it can barely run smoothly inside it's own menu. For this type of functions go for wear os smartwatches