I haven't done this before either, but you named your file: META-INF/nifi-controller-service-configuration?
-----Original Message----- From: Ron Aday [mailto:ronaday....@outlook.com] Sent: Friday, November 30, 2018 10:12 AM To: dev@nifi.apache.org Subject: [EXT] Custom UI for Custom Service Controller Good day to all! I have built many custom processors with custom ui's with success, but I can't seem to get it to work with a custom controller. By that I mean the "Advanced" button never shows up on the controller no matter what I do (so far). Is there any relevant information available pertaining to this topic? Or has anyone been successful in this and care to share their solution? Thanks, R -- Sent from: http://apache-nifi-developer-list.39713.n7.nabble.com/