diff --git a/unilabos/resources/container.py b/unilabos/resources/container.py
index 23b044c7..150d2a3a 100644
--- a/unilabos/resources/container.py
+++ b/unilabos/resources/container.py
@@ -17,7 +17,7 @@ class RegularContainer(Container):
             kwargs["size_z"] = 0
         self.kwargs = kwargs
         self.state = {}
-        super().__init__(*args, **kwargs)
+        super().__init__(*args, category="container", **kwargs)
 
     def load_state(self, state: Dict[str, Any]):
         self.state = state
diff --git a/unilabos/resources/graphio.py b/unilabos/resources/graphio.py
index 28edcae4..9a26f290 100644
--- a/unilabos/resources/graphio.py
+++ b/unilabos/resources/graphio.py
@@ -833,11 +833,12 @@ def initialize_resource(resource_config: dict, resource_type: Any = None) -> Uni
         if resource_class_config["type"] == "pylabrobot":
             resource_plr = RESOURCE(name=resource_config["name"])
             if resource_type != ResourcePLR:
-                r = resource_plr_to_ulab(resource_plr=resource_plr, parent_name=resource_config.get("parent", None))
-                # r = resource_plr_to_ulab(resource_plr=resource_plr)
-                if resource_config.get("position") is not None:
-                    r["position"] = resource_config["position"]
-                r = tree_to_list([r])
+                tree_sets = ResourceTreeSet.from_plr_resources([resource_plr])
+                # r = resource_plr_to_ulab(resource_plr=resource_plr, parent_name=resource_config.get("parent", None))
+                # # r = resource_plr_to_ulab(resource_plr=resource_plr)
+                # if resource_config.get("position") is not None:
+                #     r["position"] = resource_config["position"]
+                r = tree_sets.dump()
             else:
                 r = resource_plr
         elif resource_class_config["type"] == "unilabos":
diff --git a/unilabos/ros/nodes/resource_tracker.py b/unilabos/ros/nodes/resource_tracker.py
index adfc1467..2a01b315 100644
--- a/unilabos/ros/nodes/resource_tracker.py
+++ b/unilabos/ros/nodes/resource_tracker.py
@@ -60,7 +60,7 @@ class ResourceDict(BaseModel):
     icon: str = Field(description="Resource icon", default="")
     parent_uuid: Optional["str"] = Field(description="Parent resource uuid", default=None)  # 先设定parent_uuid
     parent: Optional["ResourceDict"] = Field(description="Parent resource object", default=None, exclude=True)
-    type: Literal["device"] | str = Field(description="Resource type")
+    type: Union[Literal["device"], str] = Field(description="Resource type")
     klass: str = Field(alias="class", description="Resource class name")
     position: ResourceDictPosition = Field(description="Resource position", default_factory=ResourceDictPosition)
     pose: ResourceDictPosition = Field(description="Resource position", default_factory=ResourceDictPosition)