add parameter cutoff to parameter list

Jenkinsfile

@@ -1 +1 @@
-node {
 stage('Preparation') {
     properties([
         parameters([
             string(
                 defaultValue: 'wiktorbombola',
                 description: 'Kaggle username',
                 name: 'KAGGLE_USERNAME',
                 trim: false
             ),
             password(
                 defaultValue: '',
                 description: 'Kaggle token taken from kaggle.json file, as described in https://github.com/Kaggle/kaggle-api#api-credentials',
                 name: 'KAGGLE_KEY'
             )
         ])
     ])
 }
 stage('Build') {
     withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
              "KAGGLE_KEY=${params.KAGGLE_KEY}",
              "CUTOFF=${params.CUTOFF}"]) {
            checkout scm
            sh './script.sh ${CUTOFF}'
     }
 }
 stage('artifacts') {
         echo 'saving artifacts'
         archiveArtifacts 'output.txt'
}
}
+node {
 stage('Preparation') {
     properties([
         parameters([
             string(
                 defaultValue: 'wiktorbombola',
                 description: 'Kaggle username',
                 name: 'KAGGLE_USERNAME',
                 trim: false
             ),
             password(
                 defaultValue: '',
                 description: 'Kaggle token taken from kaggle.json file, as described in https://github.com/Kaggle/kaggle-api#api-credentials',
                 name: 'KAGGLE_KEY'
             ),
             string(
                 defaultValue: '500',
                 description: 'Number of head lines to be taken from test file',
                 name: 'CUTOFF',
                 trim: false)
         ])
     ])
 }
 stage('Build') {
     withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
              "KAGGLE_KEY=${params.KAGGLE_KEY}",
              "CUTOFF=${params.CUTOFF}"]) {
            checkout scm
            sh './script.sh ${CUTOFF}'
     }
 }
 stage('artifacts') {
         echo 'saving artifacts'
         archiveArtifacts 'output.txt'
}
}