diff --git a/MyPSACC.py b/MyPSACC.py
index 54a6e9f..76643bc 100644
--- a/MyPSACC.py
+++ b/MyPSACC.py
@@ -144,6 +144,7 @@ class MyPSACC:
             "id"] + "/status?client_id=" + self.client_id, headers=MyPSACC.headers, data=body)
         data = res.json()
         return data
+
     def get_vehicles(self):
 
         res =self.api().get_vehicles_by_device()
diff --git a/README.md b/README.md
index 71d65ba..fb50307 100644
--- a/README.md
+++ b/README.md
@@ -46,10 +46,12 @@ With this app  you will be able to :
  3. If it works you will have VIN of your vehicles and there ids in the last line. The script generate a test.json file with all credentials needed.
  
  ## II. Use the app
-  1. start the app:
-   ``python3 server.py -f test.json`` 
+  1. Install requirements
+  ```pip3 install -r requirements.txt```
+  2. start the app:
+   ``python3 server.py -f test.json -c charge_control1.json`` 
   
-  2. Test it 
+  3. Test it 
   
     2.1 Get the car state :
     http://localhost:5000/get_vehiculeinfo/YOURVIN
diff --git a/server.py b/server.py
index 035f601..e423564 100644
--- a/server.py
+++ b/server.py
@@ -63,7 +63,7 @@ def charge_control():
 def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument("-f","--config", help="config file",type  = argparse.FileType('r'))
-    parser.add_argument("-c","--charge-control", help="enable charge control",action="store_true")
+    parser.add_argument("-c","--charge-control", help="enable charge control",const="charge_control.json", nargs='?')
     parser.parse_args()
     return parser