fix dh bug
diff --git a/xos/services/vpn/models.py b/xos/services/vpn/models.py
index 97c781b..ad85b88 100644
--- a/xos/services/vpn/models.py
+++ b/xos/services/vpn/models.py
@@ -182,7 +182,7 @@
         return self.get_attribute("dh", self.default_attributes['dh'])
 
     @dh.setter
-    def server_key(self, value):
+    def dh(self, value):
         self.set_attribute("dh", value)