It has been several months since I tried this.
I created the properties using the solr config API
https://cwiki.apache.org/confluence/display/solr/Config+API#ConfigAPI-CreatingandUpdatingUser-DefinedProperties
I created them as user defined properties. and then referenced them in the
cdcr request
You haven't really told us what you tried and what the failure was.
Is your problem getting the _configuration_ created or using the
system variables after they're created?
You need to tell us exactly _what_ you tried and exactly _how_ what
you tried didn't work. Details matter, particularly what