diff --git a/unilabos_msgs/action/ResourceCreateFromOuterEasy.action b/unilabos_msgs/action/ResourceCreateFromOuterEasy.action
index cd16bb6..420602e 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