In the fix for JENKINS-9686 (this changeset: https://github.com/jenkinsci/mercurial-plugin/commit/7d5b7d52221b55e7cb6bee5ae280bb3ecd2ffe9f), functionality for expanding String parameters was added to the Mercurial polling code. I would like to be able to use Choice parameters as well, as this is often a more suitable and less error-prone way of parameterising branches.