Entity Framework Core - Knowledge Base (KB)

EF2.2 Core 2.2 Auditing returns same old and new value how to fix?

I am trying to implement an Audit table in my .net core (2.2) using EF 2.2 code first. My intention is to log all changes made in my entities I was following ...this blog post... to implement. Everything seems fine but I am getting same old and new value....