Is there a guide to fix iMessage in an ESXi VM for Mojave?

I tried following this guide but

How to Fix macOS Mojave iMessage, iCloud, App Store on VMware

I get stuck on this step

Step #2. Now find board-id.reflectHost = “True”. Once you’ve found this text, Change “TRUE” to “FALSE” and then add a blank line beneath it. Add your system definitions at that blank line.

This entry does not exist in my file.

Is there such a guide for ESXi?