this implemenations sounds really not good, do not use srings any more

git-svn-id: https://svn.erp5.org/repos/experimental@1949 bc57dcba-3610-0410-ab4f-dc20bb96b918

product/ERP5ShortMessage/Document/ShortMessageDocument.py

@@ -68,7 +68,7 @@ class ShortMessageDocument(Event):
     """Get quantity of sms sended"""
     #XXX-Fx : See with JPS for a new event implementation
     #XXX-Fx : DestinationReference property must be replace by a category
-    return len(self.getDestinationReference().split(','))
+    return len(self.getDestinationList())
 
   security.declareProtected(Permissions.UseMailhostServices,
                             'isDelivered')