fix: update integration tests to use 2-element variable selectors (#23766)

api/tests/integration_tests/workflow/nodes/test_code.py

         environment_variables=[],
         conversation_variables=[],
     )
-    variable_pool.add(["code", "123", "args1"], 1)
-    variable_pool.add(["code", "123", "args2"], 2)
+    variable_pool.add(["code", "args1"], 1)
+    variable_pool.add(["code", "args2"], 2)
 
     node = CodeNode(
         id=str(uuid.uuid4()),
             "variables": [
                 {
                     "variable": "args1",
-                    "value_selector": ["1", "123", "args1"],
+                    "value_selector": ["1", "args1"],
                 },
-                {"variable": "args2", "value_selector": ["1", "123", "args2"]},
+                {"variable": "args2", "value_selector": ["1", "args2"]},
             ],
             "answer": "123",
             "code_language": "python3",
     }
 
     node = init_code_node(code_config)
-    node.graph_runtime_state.variable_pool.add(["1", "123", "args1"], 1)
-    node.graph_runtime_state.variable_pool.add(["1", "123", "args2"], 2)
+    node.graph_runtime_state.variable_pool.add(["1", "args1"], 1)
+    node.graph_runtime_state.variable_pool.add(["1", "args2"], 2)
 
     # execute node
     result = node._run()
             "variables": [
                 {
                     "variable": "args1",
-                    "value_selector": ["1", "123", "args1"],
+                    "value_selector": ["1", "args1"],
                 },
-                {"variable": "args2", "value_selector": ["1", "123", "args2"]},
+                {"variable": "args2", "value_selector": ["1", "args2"]},
             ],
             "answer": "123",
             "code_language": "python3",
     }
 
     node = init_code_node(code_config)
-    node.graph_runtime_state.variable_pool.add(["1", "123", "args1"], 1)
-    node.graph_runtime_state.variable_pool.add(["1", "123", "args2"], 2)
+    node.graph_runtime_state.variable_pool.add(["1", "args1"], 1)
+    node.graph_runtime_state.variable_pool.add(["1", "args2"], 2)
 
     # execute node
     result = node._run()
             "variables": [
                 {
                     "variable": "args1",
-                    "value_selector": ["1", "123", "args1"],
+                    "value_selector": ["1", "args1"],
                 },
-                {"variable": "args2", "value_selector": ["1", "123", "args2"]},
+                {"variable": "args2", "value_selector": ["1", "args2"]},
             ],
             "answer": "123",
             "code_language": "python3",
             "variables": [
                 {
                     "variable": "args1",
-                    "value_selector": ["1", "123", "args1"],
+                    "value_selector": ["1", "args1"],
                 },
-                {"variable": "args2", "value_selector": ["1", "123", "args2"]},
+                {"variable": "args2", "value_selector": ["1", "args2"]},
             ],
             "answer": "123",
             "code_language": "python3",

api/tests/integration_tests/workflow/nodes/test_http.py

         environment_variables=[],
         conversation_variables=[],
     )
-    variable_pool.add(["a", "b123", "args1"], 1)
-    variable_pool.add(["a", "b123", "args2"], 2)
+    variable_pool.add(["a", "args1"], 1)
+    variable_pool.add(["a", "args2"], 2)
 
     node = HttpRequestNode(
         id=str(uuid.uuid4()),
                 "title": "http",
                 "desc": "",
                 "method": "get",
-                "url": "http://example.com/{{#a.b123.args2#}}",
+                "url": "http://example.com/{{#a.args2#}}",
                 "authorization": {
                     "type": "api-key",
                     "config": {
                         "header": "api-key",
                     },
                 },
-                "headers": "X-Header:123\nX-Header2:{{#a.b123.args2#}}",
-                "params": "A:b\nTemplate:{{#a.b123.args2#}}",
+                "headers": "X-Header:123\nX-Header2:{{#a.args2#}}",
+                "params": "A:b\nTemplate:{{#a.args2#}}",
                 "body": None,
             },
         }
                         {
                             "key": "",
                             "type": "text",
-                            "value": '{"a": "{{#a.b123.args1#}}"}',
+                            "value": '{"a": "{{#a.args1#}}"}',
                         },
                     ],
                 },
                         {
                             "key": "a",
                             "type": "text",
-                            "value": "{{#a.b123.args1#}}",
+                            "value": "{{#a.args1#}}",
                         },
                         {
                             "key": "b",
                             "type": "text",
-                            "value": "{{#a.b123.args2#}}",
+                            "value": "{{#a.args2#}}",
                         },
                     ],
                 },
                         {
                             "key": "a",
                             "type": "text",
-                            "value": "{{#a.b123.args1#}}",
+                            "value": "{{#a.args1#}}",
                         },
                         {
                             "key": "b",
                             "type": "text",
-                            "value": "{{#a.b123.args2#}}",
+                            "value": "{{#a.args2#}}",
                         },
                     ],
                 },
     assert 'form-data; name="Redirect"\r\n\r\nhttp://example6.com' in result.process_data.get("request", "")
     # resp = result.outputs
     # assert "http://example3.com" == resp.get("headers", {}).get("referer")
+
+
+@pytest.mark.parametrize("setup_http_mock", [["none"]], indirect=True)
+def test_nested_object_variable_selector(setup_http_mock):
+    """Test variable selector functionality with nested object properties."""
+    # Create independent test setup without affecting other tests
+    graph_config = {
+        "edges": [
+            {
+                "id": "start-source-next-target",
+                "source": "start",
+                "target": "1",
+            },
+        ],
+        "nodes": [
+            {"data": {"type": "start"}, "id": "start"},
+            {
+                "id": "1",
+                "data": {
+                    "title": "http",
+                    "desc": "",
+                    "method": "get",
+                    "url": "http://example.com/{{#a.args2#}}/{{#a.args3.nested#}}",
+                    "authorization": {
+                        "type": "api-key",
+                        "config": {
+                            "type": "basic",
+                            "api_key": "ak-xxx",
+                            "header": "api-key",
+                        },
+                    },
+                    "headers": "X-Header:{{#a.args3.nested#}}",
+                    "params": "nested_param:{{#a.args3.nested#}}",
+                    "body": None,
+                },
+            },
+        ],
+    }
+
+    graph = Graph.init(graph_config=graph_config)
+
+    init_params = GraphInitParams(
+        tenant_id="1",
+        app_id="1",
+        workflow_type=WorkflowType.WORKFLOW,
+        workflow_id="1",
+        graph_config=graph_config,
+        user_id="1",
+        user_from=UserFrom.ACCOUNT,
+        invoke_from=InvokeFrom.DEBUGGER,
+        call_depth=0,
+    )
+
+    # Create independent variable pool for this test only
+    variable_pool = VariablePool(
+        system_variables=SystemVariable(user_id="aaa", files=[]),
+        user_inputs={},
+        environment_variables=[],
+        conversation_variables=[],
+    )
+    variable_pool.add(["a", "args1"], 1)
+    variable_pool.add(["a", "args2"], 2)
+    variable_pool.add(["a", "args3"], {"nested": "nested_value"})  # Only for this test
+
+    node = HttpRequestNode(
+        id=str(uuid.uuid4()),
+        graph_init_params=init_params,
+        graph=graph,
+        graph_runtime_state=GraphRuntimeState(variable_pool=variable_pool, start_at=time.perf_counter()),
+        config=graph_config["nodes"][1],
+    )
+
+    # Initialize node data
+    if "data" in graph_config["nodes"][1]:
+        node.init_node_data(graph_config["nodes"][1]["data"])
+
+    result = node._run()
+    assert result.process_data is not None
+    data = result.process_data.get("request", "")
+
+    # Verify nested object property is correctly resolved
+    assert "/2/nested_value" in data  # URL path should contain resolved nested value
+    assert "X-Header: nested_value" in data  # Header should contain nested value
+    assert "nested_param=nested_value" in data  # Param should contain nested value

api/tests/integration_tests/workflow/nodes/test_parameter_extractor.py

         environment_variables=[],
         conversation_variables=[],
     )
-    variable_pool.add(["a", "b123", "args1"], 1)
-    variable_pool.add(["a", "b123", "args2"], 2)
+    variable_pool.add(["a", "args1"], 1)
+    variable_pool.add(["a", "args2"], 2)
 
     node = ParameterExtractorNode(
         id=str(uuid.uuid4()),

api/tests/integration_tests/workflow/nodes/test_template_transform.py

             "variables": [
                 {
                     "variable": "args1",
-                    "value_selector": ["1", "123", "args1"],
+                    "value_selector": ["1", "args1"],
                 },
-                {"variable": "args2", "value_selector": ["1", "123", "args2"]},
+                {"variable": "args2", "value_selector": ["1", "args2"]},
             ],
             "template": code,
         },
         environment_variables=[],
         conversation_variables=[],
     )
-    variable_pool.add(["1", "123", "args1"], 1)
-    variable_pool.add(["1", "123", "args2"], 3)
+    variable_pool.add(["1", "args1"], 1)
+    variable_pool.add(["1", "args2"], 3)
 
     node = TemplateTransformNode(
         id=str(uuid.uuid4()),

api/tests/integration_tests/workflow/nodes/test_tool.py

 
     ToolParameterConfigurationManager.decrypt_tool_parameters = MagicMock(return_value={"format": "%Y-%m-%d %H:%M:%S"})
 
-    node.graph_runtime_state.variable_pool.add(["1", "123", "args1"], "1+1")
+    node.graph_runtime_state.variable_pool.add(["1", "args1"], "1+1")
 
     # execute node
     result = node._run()