diff --git a/README.md b/README.md
index e85ea447..240e388c 100644
--- a/README.md
+++ b/README.md
@@ -570,7 +570,8 @@ https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Cond
 For now, you have access to these variables in some cards (not all):
 
  `state` will return the state of your defined `entity`.  
- `entity` will return your entity you defined like `switch.test` in this example.
+ `entity` will return your entity you defined like `switch.test` in this example.  
+ `hass` is an advanced variable that alows you even more control, more info [here](https://developers.home-assistant.io/docs/dev_101_hass/).
 
 But in all cards you can also use this: