diff --git a/Jenkinsfile b/Jenkinsfile
index 559e204..c57873d 100644
--- a/Jenkinsfile
+++ b/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}" ]) {
            checkout scm
            sh './script.sh'
     }
 }
 stage('artifacts') {
     steps {
         echo 'saving artifacts'
         archiveArtifacts 'output.txt'
         }
}
}

\ No newline at end of file
+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'
}
}

\ No newline at end of file
diff --git a/script.sh b/script.sh
index 6d88492..8077f6a 100755
--- a/script.sh
+++ b/script.sh
@@ -3,5 +3,5 @@ kaggle competitions download -c titanic
 echo 'kaggle download completed'
 unzip titanic.zip
 wc -l train.csv
-head -500 train.csv | shuf > output.txt
+head -$1 train.csv | shuf > output.txt
 echo 'script done'