diff --git a/unilabos/registry/registry.py b/unilabos/registry/registry.py
index 20e0245..87efd9c 100644
--- a/unilabos/registry/registry.py
+++ b/unilabos/registry/registry.py
@@ -135,6 +135,7 @@ class Registry:
                                     "res_id": "unilabos_resources",  # 将当前实验室的全部物料id作为下拉框可选择
                                     "device_id": "unilabos_devices",  # 将当前实验室的全部设备id作为下拉框可选择
                                     "parent": "unilabos_nodes",  # 将当前实验室的设备/物料作为下拉框可选择
+                                    "class_name": "unilabos_class",
                                 },
                             },
                             "test_latency": {
diff --git a/unilabos_msgs/action/ResourceCreateFromOuterEasy.action b/unilabos_msgs/action/ResourceCreateFromOuterEasy.action
index 420602e..cd16bb6 100644
--- a/unilabos_msgs/action/ResourceCreateFromOuterEasy.action
+++ b/unilabos_msgs/action/ResourceCreateFromOuterEasy.action
@@ -1,6 +1,6 @@
 string res_id
 string device_id
-string class_name
+string[] class_name
 string parent
 geometry_msgs/Point bind_locations
 int32[] liquid_input_slot