diff --git a/Jenkinsfile_eval b/Jenkinsfile_eval
index a36df1e..c3a1952 100644
--- a/Jenkinsfile_eval
+++ b/Jenkinsfile_eval
@@ -26,7 +26,7 @@ pipeline {
 		}
         stage('Save metrics to bulk file & create chart') {
             steps{
-                sh "if [ -f "rmse.txt" ]; "${env.BUILD_ID} ${cat rmse.txt}" >> bulk_metrics.txt fi"
+                sh "python3 save_metrics.py ${env.BUILD_ID}"
                 archiveArtifacts 'bulk_metrics.txt'
                 sh "python3 create_chart.py"
                 archiveArtifacts 'chart.png'
diff --git a/save_metrics.py b/save_metrics.py
new file mode 100644
index 0000000..8b73920
--- /dev/null
+++ b/save_metrics.py
@@ -0,0 +1,17 @@
+import os.path
+import sys
+import os.path
+
+arguments = sys.argv[1:]
+
+build_no = arguments[0]
+
+result = ""
+
+if os.path.exists("rmse.txt"):
+    with open("rmse.txt", "r") as file:
+        for line in file.readlines():
+            result = line
+
+    with open("bulk_metrics.txt", "a") as file:
+        file.write(result)