diff --git a/tools/udp_control.py b/tools/udp_control.py
index 0858771..73b9c57 100644
--- a/tools/udp_control.py
+++ b/tools/udp_control.py
@@ -103,7 +103,7 @@ class ArmJointState:
 
     def to_udp_message(self) -> bytes:
         return (
-            f"JXB:{-self.height - 290}:{self.j2}:{self.j3}:{self.j4}:"
+            f"JXB:{self.height}:{self.j2}:{self.j3}:{self.j4}:"
             f"{self.j5}:{self.j6}:0:0:EZHY\n"
         ).encode("utf-8")