Accept timezone id instead of offset in commands

1 files changed, 4 insertions, 2 deletions

diff --git a/src/org/traccar/protocol/Jt600ProtocolEncoder.java b/src/org/traccar/protocol/Jt600ProtocolEncoder.java
index 0bf389460..377f104a3 100644
--- a/src/org/traccar/protocol/Jt600ProtocolEncoder.java
+++ b/src/org/traccar/protocol/Jt600ProtocolEncoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2017 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
  */
 package org.traccar.protocol;
 
+import java.util.TimeZone;
+
 import org.traccar.StringProtocolEncoder;
 import org.traccar.helper.Log;
 import org.traccar.model.Command;
@@ -29,7 +31,7 @@ public class Jt600ProtocolEncoder extends StringProtocolEncoder {
             case Command.TYPE_ENGINE_RESUME:
                 return "(S07,1)";
             case Command.TYPE_SET_TIMEZONE:
-                int offset = command.getInteger(Command.KEY_TIMEZONE) / 60;
+                int offset = TimeZone.getTimeZone(command.getString(Command.KEY_TIMEZONE)).getRawOffset() / 60000;
                 return "(S09,1," + offset + ")";
             case Command.TYPE_REBOOT_DEVICE:
                 return "(S17)";