diff --git a/workflow/usage.rst b/workflow/usage.rst
index 9396e3b95d1..bf35abbbfad 100644
--- a/workflow/usage.rst
+++ b/workflow/usage.rst
@@ -138,24 +138,33 @@ like this:
 
     class BlogPost
     {
-        // This property is used by the marking store
         public $currentPlace;
         public $title;
         public $content;
     }
 
+.. tip::
+
+    The ``type`` (default value ``single_state``) and ``arguments`` (default value ``marking``)
+    attributes of the ``marking_store`` option are optional. If omitted, their default values
+    will be used.
+    
 .. note::
 
     The marking store type could be "multiple_state" or "single_state".
     A single state marking store does not support a model being on multiple places
     at the same time.
+    
+    If a ``multiple_state`` is used, the attribute should be an ``array``, 
+    using Doctrine, you can use ``json``. 
 
-.. tip::
-
-    The ``type`` (default value ``single_state``) and ``arguments`` (default value ``marking``)
-    attributes of the ``marking_store`` option are optional. If omitted, their default values
-    will be used.
+    If a ``single_state`` is used, the persisted state type should be a string, 
+    if you need to store an int (due to DB limitations and/or project constraints),
+    be aware that you need to implement :class:`Symfony\\Component\\Workflow\\MarkingStore\\MarkingStoreInterface`
+    in order to transform the int back to something understandable by Workflow.
 
+    If something else is used, you're in charge of choosing the best storage format.
+    
 With this workflow named ``blog_publishing``, you can get help to decide
 what actions are allowed on a blog post::