During 'build promotion' I would like to tag the project sources. The tag name should be given automatically by an environment variable. This variable is not included in the Jenkins default environment but given by the EnvInjection plugin.
The scenario is given in the attachment.

Expected behaviour:
The variable 'release.number' set by the EnvInject plugin should be available to the svn-tag plugin.

Present behaviour:
${env['release.number']} is expanded to 'null'