jenkinsfile failed step triggers another jenkins job.

[nup]

Hi, 

I have a build step in jenkinsfile as smoke test. I would like to see if that smoke test fails then trigger another jenkins job. Basically, I have a rollback jenkins job that is not part of the pipeline, but in pipeline If my smoke test fails then it triggers my rollback jenkins job. 

Any help would be greatly appreciated. 

Thank you.

[nup]

Adding some more details below. Basically, If the smoke test fails then next step is triggers rollback job.  I think this looks good, but just need to test it. Any updates on to make this step better would be appreciated. 

    stage('Smoke Test') {

      steps {

        script {

             git 'ssh://git.com/smoketest'

             sauce( 'connection_info ') {

              sauceconnect(useGeneratedTunnelIdentifier: true, verboseLogging: true) {

              sh 'env | sort'

              sh'''

             export SELENIUM_PLATFORM=Safari

            mvn clean test -Psmoke

          if (currentBuild.result == 'FAILED')

          build 'rollback-job'

        }

      }

    }