vertice paint group not showing up


Im in cycles and learning about vertice painting and principle shader. Ive been vertice painting. I added it to my object and this combined with a normal texture worked ok. Now ive painted a second area. The belt. and its not showing up in the render viewport. Here is chaotic screen print. i hope u can see what i mean.

and here is my blend file. You have to switch to vertice paint to see ive painted in the belt. monster wats wrong 2.blend (13.3 MB)