diff --git a/_preparation.groovy b/_preparation.groovy
index cadb879..dbf0412 100644
--- a/_preparation.groovy
+++ b/_preparation.groovy
@@ -1,6 +1,6 @@
 stage ('code-dev'){
         steps{
-                "echo enter your code dev"
+               sh "echo enter your code dev"
         }                 
 }