properties in maven-remote-resources-plugin

[Delany]

I don't want to hardcode the version number of the remote project into this
plugin config, so I've used a property made available in a parent pom.
But it's not being resolved. What am I doing wrong?

      <plugin>
        <artifactId>maven-remote-resources-plugin</artifactId>
        <executions>
          <execution>
            <id>process-remote-resources</id>
            <goals>
              <goal>process</goal>
            </goals>
            <configuration>
              <resourceBundles>

<resourceBundle>dbs:commondb:${dep.dbs.commondb}</resourceBundle>
              </resourceBundles>
            </configuration>
          </execution>
        </executions>
      </plugin>

There's a mention of including a <properties> tag that is a map, but Im not
sure what that should look like.

https://maven.apache.org/plugins/maven-remote-resources-plugin/usage.html

Thanks,