diff --git a/unilabos/resources/itemized_carrier.py b/unilabos/resources/itemized_carrier.py
index 3b3454a..a5207d4 100644
--- a/unilabos/resources/itemized_carrier.py
+++ b/unilabos/resources/itemized_carrier.py
@@ -149,6 +149,7 @@ class ItemizedCarrier(ResourcePLR):
 
     if not reassign and self.sites[idx] is not None:
       raise ValueError(f"a site with index {idx} already exists")
+    location = list(self.child_locations.values())[idx]
     super().assign_child_resource(resource, location=location, reassign=reassign)
     self.sites[idx] = resource
 
diff --git a/unilabos/resources/resource_tracker.py b/unilabos/resources/resource_tracker.py
index a8d1e14..061ba86 100644
--- a/unilabos/resources/resource_tracker.py
+++ b/unilabos/resources/resource_tracker.py
@@ -14,9 +14,9 @@ if TYPE_CHECKING:
 
 
 class ResourceDictPositionSize(BaseModel):
-    depth: float = Field(description="Depth", default=0.0)
-    width: float = Field(description="Width", default=0.0)
-    height: float = Field(description="Height", default=0.0)
+    depth: float = Field(description="Depth", default=0.0)  # z
+    width: float = Field(description="Width", default=0.0)  # x
+    height: float = Field(description="Height", default=0.0)  # y
 
 
 class ResourceDictPositionScale(BaseModel):
@@ -469,9 +469,9 @@ class ResourceTreeSet(object):
                 **res.config,
                 "name": res.name,
                 "type": res.config.get("type", plr_type),
-                "size_x": res.config.get("size_x", 0),
-                "size_y": res.config.get("size_y", 0),
-                "size_z": res.config.get("size_z", 0),
+                "size_x": res.pose.size.width,
+                "size_y": res.pose.size.height,
+                "size_z": res.pose.size.depth,
                 "location": {
                     "x": res.pose.position.x,
                     "y": res.pose.position.y,
diff --git a/unilabos/ros/nodes/base_device_node.py b/unilabos/ros/nodes/base_device_node.py
index 954a653..66a48c4 100644
--- a/unilabos/ros/nodes/base_device_node.py
+++ b/unilabos/ros/nodes/base_device_node.py
@@ -881,6 +881,13 @@ class BaseROS2DeviceNode(Node, Generic[T]):
                             raise ValueError("tree_set不能为None")
                         plr_resources = tree_set.to_plr_resources()
                         result = _handle_add(plr_resources, tree_set, additional_add_params)
+                        new_tree_set = ResourceTreeSet.from_plr_resources(plr_resources)
+                        r = SerialCommand.Request()
+                        r.command = json.dumps(
+                            {"data": {"data": new_tree_set.dump()}, "action": "update"})  # 和Update Resource一致
+                        response: SerialCommand_Response = await self._resource_clients[
+                            "c2s_update_resource_tree"].call_async(r)  # type: ignore
+                        self.lab_logger().info(f"确认资源云端 Add 结果: {response.response}")
                         results.append(result)
                     elif action == "update":
                         if tree_set is None:
@@ -1758,6 +1765,7 @@ class ROS2DeviceNode:
             or driver_class.__name__ == "LiquidHandlerBiomek"
             or driver_class.__name__ == "PRCXI9300Handler"
             or driver_class.__name__ == "TransformXYZHandler"
+            or driver_class.__name__ == "OpcUaClient"
         )
 
         # 创建设备类实例