diff --git a/src/sipcentric/__init__.py b/src/sipcentric/__init__.py
index d9dc29f..2a22f0d 100644
--- a/src/sipcentric/__init__.py
+++ b/src/sipcentric/__init__.py
@@ -131,13 +131,13 @@ class API(object):
 class APIObject(object):
     def __init__(self, api, id=None, data=None):
         self._api = api
-        self._id = id
+        self.id = id
         if data:
-            self._id = data.get("id", None)
+            self.id = int( data.get("id", None) )
         self._data = data
 
     @classmethod
-    def makeUrl(cls, _id=None):
+    def makeUrl(cls, id=None):
         raise NotImplementedError()
 
     @property
@@ -151,23 +151,23 @@ class APIObject(object):
         self._data = data
 
     def create(self):
-        if self._id:
+        if self.id:
             raise ValueError(
-                "%s ID %d already created" % (self.__class__.__name__, self._id)
+                "%s ID %d already created" % (self.__class__.__name__, self.id)
             )
         if not self._data:
             raise ValueError("No data associated with record.")
         self._data = self._api.post(self.__class__.makeUrl(), data=self._data)
-        self._id = self._data.get("id")
+        self.id = int( self._data.get("id") )
         return self._data
 
     def update(self):
-        if not self._id:
+        if not self.id:
             raise ValueError("%s not yet created" % (self.__class__.__name__,))
         if not self._data:
             raise ValueError("No data associated with record.")
         self._data = self._api.patch(self.makeUrl(), data=self._data)
-        self._id = self._data.get("id")
+        self.id = int( self._data.get("id") )
         return self._data
 
     @classmethod
@@ -181,7 +181,7 @@ class APIObject(object):
         return path
 
     def url(self, parent=None):
-        return self.__class__.makeUrl(self._id, parent)
+        return self.__class__.makeUrl(self.id, parent)
 
 
 class Partner(APIObject):