diff --git a/app/src/main/java/com/example/bpa/app/DeviceData.java b/app/src/main/java/com/example/bpa/app/DeviceData.java
index 813e04c..76b12a7 100644
--- a/app/src/main/java/com/example/bpa/app/DeviceData.java
+++ b/app/src/main/java/com/example/bpa/app/DeviceData.java
@@ -569,7 +569,7 @@ public class DeviceData {
      * @param value
      */
     public void setCalibrationWeight(short value, IWriteCallBack callback) {
-        ModbusTcpServer.get().WriteShort("250", value, callback);
+        ModbusTcpServer.get().WriteShort("VW250", value, callback);
     }
 
     /**
@@ -578,7 +578,7 @@ public class DeviceData {
      * @param value
      */
     public void setCalibrationWeight9(short value, IWriteCallBack callback) {
-        ModbusTcpServer.get().WriteShort("254", value, callback);
+        ModbusTcpServer.get().WriteShort("VW254", value, callback);
     }