diff --git a/mgraph_ai/mgraph/schemas/Schema__MGraph__Node.py b/mgraph_ai/mgraph/schemas/Schema__MGraph__Node.py
index b357818..14fae5f 100644
--- a/mgraph_ai/mgraph/schemas/Schema__MGraph__Node.py
+++ b/mgraph_ai/mgraph/schemas/Schema__MGraph__Node.py
@@ -7,4 +7,4 @@ class Schema__MGraph__Node(Type_Safe):
     node_data : Schema__MGraph__Node__Data
     node_id   : Obj_Id
     node_type : Type['Schema__MGraph__Node']
-    
+
diff --git a/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node.py b/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node.py
index a5a55d5..962a4e5 100644
--- a/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node.py
+++ b/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node.py
@@ -1,4 +1,17 @@
+from osbot_utils.helpers.Obj_Id                          import Obj_Id
 from mgraph_ai.mgraph.schemas.Schema__MGraph__Node       import Schema__MGraph__Node
 
 class Schema__MGraph__Json__Node(Schema__MGraph__Node):
-    pass
+
+    def __init__(self, **kwargs):
+        #return super().__init__(**kwargs)
+        node_data = kwargs.get('node_data') or self.__annotations__['node_data']()
+        node_id   = kwargs.get('node_id'  ) or Obj_Id()
+        node_type = kwargs.get('node_type') or self.__class__
+        node_dict = dict(node_data = node_data,
+                         node_id   = node_id  ,
+                         node_type = node_type)
+        object.__setattr__(self, '__dict__', node_dict)
+
+
+
diff --git a/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node__Value__Data.py b/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node__Value__Data.py
index f1090bf..51347d3 100644
--- a/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node__Value__Data.py
+++ b/mgraph_ai/providers/json/schemas/Schema__MGraph__Json__Node__Value__Data.py
@@ -3,4 +3,9 @@
 
 class Schema__MGraph__Json__Node__Value__Data(Schema__MGraph__Node__Data):  # Base schema for JSON node data
     value      : Any                                                        # The actual value
-    value_type : type                                                       # Type of the value
\ No newline at end of file
+    value_type : type                                                       # Type of the value
+
+    def __init__(self, **kwargs):
+        data_dict = dict(value      = kwargs.get('value'     ),             # note: no type checking here
+                         value_type = kwargs.get('value_type'))             # note: no type checking here
+        object.__setattr__(self, '__dict__', data_dict)
\ No newline at end of file
diff --git a/tests/unit/providers/json/_performance/test_Perf_Test__MGraph_Json.py b/tests/unit/providers/json/_performance/test_Perf_Test__MGraph_Json.py
index 4263218..cb24e2e 100644
--- a/tests/unit/providers/json/_performance/test_Perf_Test__MGraph_Json.py
+++ b/tests/unit/providers/json/_performance/test_Perf_Test__MGraph_Json.py
@@ -1,5 +1,10 @@
 import pytest
 from unittest                                               import TestCase
+
+from osbot_utils.context_managers.print_duration import print_duration
+
+from osbot_utils.utils.Dev import pprint
+
 from osbot_utils.utils.Http                                 import current_host_offline
 from mgraph_ai.providers.json.MGraph__Json                  import MGraph__Json
 from osbot_utils.helpers.trace.Trace_Call                   import trace_calls
@@ -32,18 +37,29 @@ def test_run_workflow__on_url(self):
             _.print()
             assert _.perf_test_duration.duration__total < 6 # shower in GitHub Actions (locally it's around 1.5)
 
-    # contains=['models__from_edges', 'edges', 'add_node', 'new_dict_node', 'add_property'],
-    @trace_calls(#include = ['*'],
-                 contains=['add_property', 'add_node', 'new_edge'],
-                 show_duration=True, duration_padding=120,
-                 show_class   =True,
-                 #duration_bigger_than=0.1
-                 )
+    # @trace_calls(#include = ['*'],
+    #              contains=['add_property', 'add_node', 'new_edge', 'schema'],
+    #              show_duration=True, duration_padding=120,
+    #              show_class   =True,
+    #              #duration_bigger_than=0.1
+    #              )
     def test_trace(self):
-        feed_start =  { 'channel': { 'description': 'Latest Technology News'}}
+        feed_start =  { 'channel': { 'description': 'Latest Technology News',
+                                     'abc': 'xyz'},
+                        'answer': 42,
+                        'an_list': [1,2,3]}
         target_json = TEST_DATA__TECH_NEWS__FEED_XML_JSON
         target_json = feed_start
-        MGraph__Json().load().from_json(target_json)
+        mgraph_json = MGraph__Json()
+        with print_duration(action_name='from-json'):
+            mgraph_json.load().from_json(target_json)
+        with print_duration(action_name='to-json'):
+            round_trip = mgraph_json.export().to_dict()
+        with print_duration(action_name='to-dot'):
+            dot_code = mgraph_json.export().to_dot().to_string()
+        #pprint(round_trip)
+        #print(dot_code)
+        assert target_json == round_trip