diff --git a/src/msg/PoseClassAndID.msg b/src/msg/PoseClassAndID.msg
index e02f308..6caa2a3 100644
--- a/src/msg/PoseClassAndID.msg
+++ b/src/msg/PoseClassAndID.msg
@@ -1,5 +1,5 @@
 string class_name
 int32 class_id
 geometry_msgs/Pose pose
-float64 grab_width
+float64[] grab_width