diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GdStringSerializer.java b/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GdStringSerializer.java
index 0b99efab..b9f43acf 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GdStringSerializer.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GdStringSerializer.java
@@ -33,14 +33,14 @@ public class GdStringSerializer implements IGdSerializer {
 
     @Override
     public void writeObject(StringBuilder builder, String objectStr, int deep, Field field, IFieldRegistration fieldRegistration) {
-        GenerateProtocolFile.addTab(builder, deep);
+        GenerateProtocolFile.addTabAscii(builder, deep);
         builder.append(StringUtils.format("buffer.writeString({})", objectStr)).append(LS);
     }
 
     @Override
     public String readObject(StringBuilder builder, int deep, Field field, IFieldRegistration fieldRegistration) {
         String result = "result" + GenerateProtocolFile.index.getAndIncrement();
-        GenerateProtocolFile.addTab(builder, deep);
+        GenerateProtocolFile.addTabAscii(builder, deep);
         builder.append(StringUtils.format("var {} = buffer.readString()", result)).append(LS);
         return result;
     }
diff --git a/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GenerateGdUtils.java b/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GenerateGdUtils.java
index e75603cf..df78ff93 100644
--- a/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GenerateGdUtils.java
+++ b/protocol/src/main/java/com/zfoo/protocol/serializer/gdscript/GenerateGdUtils.java
@@ -186,7 +186,7 @@ public abstract class GenerateGdUtils {
             var field = sequencedFields.get(i);
             IFieldRegistration fieldRegistration = fieldRegistrations[GenerateProtocolFile.indexOf(fields, field)];
             var fieldName = field.getName();
-            gdBuilder.append(TAB_ASCII).append(StringUtils.format("map[\"{}\"] = {}", fieldName, fieldName));
+            gdBuilder.append(TAB_ASCII).append(StringUtils.format("m[\"{}\"] = {}", fieldName, fieldName));
             if (i != sequencedFields.size() - 1) {
                 gdBuilder.append(LS);
             }
diff --git a/protocol/src/main/resources/gdscript/ProtocolTemplate.gd b/protocol/src/main/resources/gdscript/ProtocolTemplate.gd
index 8bbc33ef..f1922e18 100644
--- a/protocol/src/main/resources/gdscript/ProtocolTemplate.gd
+++ b/protocol/src/main/resources/gdscript/ProtocolTemplate.gd
@@ -4,13 +4,10 @@ const PROTOCOL_CLASS_NAME = "{}"
 {}
 {}
 
-func map() -> Dictionary:
-	var map = {}
-{}
-	return map
-
 func _to_string() -> String:
-	return JSON.stringify(map())
+	var m = {}
+{}
+	return JSON.stringify(m)
 
 static func write(buffer, packet):
 	if (buffer.writePacketFlag(packet)):