I'm trying to make changes to binary metadata based on https://doc.nuxeo.com/810/nxdoc/binary-metadata/ . But the changes are not being reflected. Added additional fields to extension. I'm new to Nuxeo. Please help

Following are the JAR files containing /OSGI-INF/picture-metadata-contrib.xml

/var/lib/nuxeo/server/packages/backup/nxserver/bundles/nuxeo-platform-imaging-api-8.10.jar /var/lib/nuxeo/server/packages/store/nuxeo-dam-6.2.3/install/bundles/nuxeo-platform-imaging-api-8.10.jar /var/lib/nuxeo/server/nxserver/bundles/nuxeo-platform-imaging-api-8.10.jar

Server version is LTS2016 running on Ubuntu 16.0.4