Question PolyBrush dont work with fbx models!

Hello everyone. I'm facing a strange problem. I wanted to use Vertex paint and installed PolyBrush for that. After creating and configuring shader, it works with standard objects but does not work with fbx format objects! But everything works with obj. But I need to use fbx. I'm using Unity 2021 and the project is in HDRP. Thank you in advance.

 

did you tick the box that says "read / write enabled" in the fbx model main properties?

 

it doesn't help

 

I am writing this to those who are interested in how I solved this problem. I work in Blender and I decided in a place that would use the usual.fbx files to use .blend files. Unity reads them perfectly and there are no problems with vertex paint. I hope this helped you!