diff --git a/xray/storage.py b/xray/storage.py
index 6ab366b..91430e8 100644
--- a/xray/storage.py
+++ b/xray/storage.py
@@ -119,6 +119,11 @@ class DataStorage(dict):
     setattr(self,key,value)
     super().__setitem__(key, value)
 
+  def __setattr__(self, key, value):
+    """ allows to add fields with data.test=4 """
+    super().__setitem__(key, value)
+    super().__setattr__(key,value)
+
   def __delitem__(self, key):
     delattr(self,key)
     super().__delitem__(key)