diff --git a/lib/createObjects.js b/lib/createObjects.js
index e710fe0..f08af69 100644
--- a/lib/createObjects.js
+++ b/lib/createObjects.js
@@ -315,7 +315,7 @@ const specialObjects = {
         'common': {
             'name': 'json data',
             'type': 'string',
-            'role': 'state',
+            'role': 'json',
             'read': true,
             'write': false
         },