diff --git a/README.md b/README.md
index 7e82d82..143c140 100755
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@ export default {
 
     id: undefined,
     layer: 'dataLayer',
-    variables: {},
+    variables: {}, /* scriptURL query params such as gtm_auth, gtm_preview can go here */
 
     pageTracking: false,
     pageViewEventName: 'nuxtRoute',