Need help for custom theme - GPU data not showing

[ValkromNest]

I've just started to use this app and I'm really enjoying it so I decided to try to create a simple theme showing data from the CPU and GPU.
For the CPU everything works fine but I cannot find a way to show data for the GPU

the theme editor and preview doesn't give me errors so I'm assuming that che code is correct (I've even tried to copy-paste the code from a working theme changing the sizes and coordinates) but I'm probably missing something, for example I've noticed that if an element overlaps with another one gets partially hidden so maybe is a problem of element sizes, but I've tried to delete everything but the GPU sensors and still nothing.

I'll attach the folder of the theme so if anyone can help me see what I'm missing I'll be really grateful since I've just spent a morning looking at it without understanding the problem

StarCitizen.zip