diff --git a/docs/Data-Transformation.md b/docs/Data-Transformation.md
index 7d73d81d..bc380a60 100644
--- a/docs/Data-Transformation.md
+++ b/docs/Data-Transformation.md
@@ -34,6 +34,8 @@ new Vue({
           email: data[i].email
         })
       }
+      
+      return transformed
     }
   }    
 })