diff --git a/src/rougail/user-data-environment/data.py b/src/rougail/user-data-environment/data.py
index 0df105c..3597578 100644
--- a/src/rougail/user-data-environment/data.py
+++ b/src/rougail/user-data-environment/data.py
@@ -67,23 +67,31 @@ class RougailUserDataEnvironment:
             if option.isoptiondescription():
                 self.parse(option)
             else:
+                # try except
+                # ValueError suivant le type
+                # PropertyError -> hidden ou frozen...
+                # test: mettre hidden à true dans le yaml
                 self.load_environment(option)
 
     def load_environment(self, option):
+        # FIXME : mettre un .upper()
+        # pour que les var de env soient en maj
+        option_name = option.path()
+        # this is used only for warning purposes
+        if option_name not in unused_environment_var:
+            return
         # the rougail type is not the tiramisu type
         # tiramisu type is option.type
         option_type = option.information.get('type')
         ismulti = option.ismulti()
         # here we retrieve the conversion func of the considered type
+
         # carefull, it could be None -> in this case, do nothing
         type_obj = CONVERT_OPTION.get(option_type, {}).get("func")
-        #
-        option_name = option.path()
-        # this is used only for warning purposes
-        if option_name not in unused_environment_var:
-            return
         self.unused_environment_var.remove(option_name)
         # let's parse the environment variables values
+        # FIXME enlever les deux fonction de helper
+        # FIXME option_bash_value = self.unused_environment_var.pop(option_name
         option_bash_value = get_rougail_environment_dict()[option_name]
         if ismulti:
             # here we expect the bash option value of a multi to be coma separated: