diff --git a/Jenkinsfile b/Jenkinsfile
index ea65091..7f7d618 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,30 +1,37 @@
-pipeline {
-    agent any
-
-    stages {
-        stage('Clone repository') {
-            steps {
-                checkout([$class: 'GitSCM', branches: [[name: '*/master']], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s464906/ium_464906']]])
-            }
-        }
-        stage('Set execute permission') {
-            steps {
-                script {
-                    sh 'chmod +x data_processing.sh'
-                }
-            }
-        }
-        stage('Run shell script') {
-            steps {
-                script {
-                    sh './data_processing.sh'
-                }
-            }
-            post {
-                success {
-                    archiveArtifacts artifacts: 'results.txt', allowEmptyArchive: true
-                }
-            }
-        }
-    }
-}
+pipeline {
+    agent any
+
+      parameters {
+        string(
+			defaultValue: '10000',
+			name: 'CUTOFF',  
+			description: 'Liczba wierszy do obcięcia ze zbioru danych')
+    }
+
+    stages {
+        stage('Clone repository') {
+            steps {
+                checkout([$class: 'GitSCM', branches: [[name: '*/master']], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s464906/ium_464906']]])
+            }
+        }
+        stage('Set execute permission') {
+            steps {
+                script {
+                    sh 'chmod +x data_processing.sh'
+                }
+            }
+        }
+        stage('Run shell script') {
+            steps {
+                script {
+                    sh './data_processing.sh'
+                }
+            }
+            post {
+                success {
+                    archiveArtifacts artifacts: 'results.txt', allowEmptyArchive: true
+                }
+            }
+        }
+    }
+}