title: Is it possible to concatenate string with job parameter in pipeline script
body: <p>I have a Pipeline jenkins job with a checkout step that I want to modify to accept the branch as a parameter.</p>
  
  <p>Currently, this is how we checkout:</p>
  
  <pre><code>stage('Prepare'){
          steps {
                 checkout([$class: 'SubversionSCM', "..." remote: 'http://svn.xxx.bbb/svn/yyy/branches/version_2017']]])
          }
  }
  </code></pre>
  
  <p>I would like to change the checkout to something like :</p>
  
  <pre><code>checkout([$class: 'SubversionSCM', "..." remote: 'http://svn.xxx.bbb/svn/yyy/params.BRANCH/params.VERSION']]])
  </code></pre>
  
  <p>Anyone has done something similar? I can't figure out if it is possible to concatenate a string with job parameters. </p>