Ability to use variables in step name

Currently, it's not possible to use a variable in the step name as the following example:

pipelines:
  default:
    - step:
          name: Deploy to $BITBUCKET_PR_DESTINATION_BRANCH
          script:
            - <script>

It'd be great to use the variable in the step name for the user to identify which tests are running from the branch for example in the UI.