I've successfully used SW Task Scheduler to add custom properties to many files, but how can I add a configuration specific property to ALL configurations?

I want to add the property "DrawingNumber" with value \\\$PRP:"SW-File Name"-\\\$PRP:"Configuration Name"

Any help would be greatly appreciated.

The resources I've found are out of date/ have broken links or the macros haven't worked for me:

https://forum.solidworks.com/message/575324?q=add%20configuration%20specific%20properties