Presently unable to use the parameter mapping functionality of the jira-trigger-plugin to map fields on the issue attribute path to Jenkins parameters. When it is attempted, the following error message appears in the Jenkins log.

org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrap.invoke Can't resolve attribute customfield_12345 from JIRA issue. Example: description, key, status.name. Read help for more information.