diff --git a/Jenkinsfile b/Jenkinsfile
index 623892d..fbfe00f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -9,6 +9,10 @@ pipeline {
                     trim: false
                 )
         }
+    environment {
+        KAGGLE_KEY = ${params.key}
+        KAGGLE_USERNAME = ${params.username}
+    }
 
     stages {
         stage('checkout: Check out from version control') {
@@ -18,12 +22,9 @@ pipeline {
         }
         stage('sh: Shell Script') {
             steps {
-                withEnv(['KAGGLE_USERNAME=$params.username',
-                 'KAGGLE_KEY=$params.key' ]) {
-                    sh 'echo KAGGLE_USERNAME: $KAGGLE_USERNAME'
-                    sh 'chmod +x preparations.sh'
-                    sh './preparations.sh'
-                }
+                sh 'echo KAGGLE_USERNAME: $KAGGLE_USERNAME'
+                sh 'chmod +x preparations.sh'
+                sh './preparations.sh'
             }
         }
     }