title: Is it possible to check and change parameters in jenkins pipeline?
body: <p>I have jenkins pipeline which will be triggered by a non-technical person and a technical person will approve or reject this build. 
  So my problem is, in that flow technical person should change/fill some parameters that is empty(non-technical person can't know or forgot to enter).</p>
  
  <pre><code>stage 'Waiting Approval'
  currentBuild.displayName = "Waiting for Approvel:" + name
  timeout(time: 5, unit: 'DAYS')
          {
              input message: "Do you approve creating new user("+ name +")?", ok: 'Approve', submitter: 'Bilisim'
          }
  
  // ########### STEP For Checking Missing or Wrong Parameters &amp; Correct Them !!!! ##############
  node('domainController') {
      stage 'Create New User'
      currentBuild.displayName = "Creating AD User:"+name
      build job: 'Create New AD User', parameters: [string(name: 'groups', value: groups), string(name: 'emailAdd', value: emailAdd), string(name: 'name', value: name), string(name: 'surname', value: surname), string(name: 'title', value: title), string(name: 'department', value: department), string(name: 'manager', value: manager), string(name: 'company', value: company), string(name: 'streetAdd', value: streetAdd), string(name: 'city', value: city), string(name: 'state', value: state), string(name: 'country', value: country), string(name: 'pcode', value: pcode), booleanParam(name: 'sendMail', value: sendMail.toBoolean()), booleanParam(name: 'details', value: details.toBoolean()), string(name: 'ou', value: ou)]
      currentBuild.displayName = "Finished Creating User:" + name
  }
  </code></pre>