diff --git a/package-lock.json b/package-lock.json
index 1e702ae..2a6410b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "behavior3editor",
-  "version": "1.8.3",
+  "version": "1.8.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "behavior3editor",
-      "version": "1.8.3",
+      "version": "1.8.4",
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 6dd1c09..67ba286 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "behavior3editor",
-  "version": "1.8.3",
+  "version": "1.8.4",
   "main": "dist-electron/main/index.js",
   "description": "行为树编辑器",
   "author": "zhandouxiaojiji & codetypes",
diff --git a/src/misc/b3type.ts b/src/misc/b3type.ts
index f5df33a..70fd785 100644
--- a/src/misc/b3type.ts
+++ b/src/misc/b3type.ts
@@ -1,6 +1,8 @@
 import { NodeDef } from "../behavior3/src/behavior3";
 
-export const VERSION = "1.8.2";
+export const VERSION = "1.8.4";
+
+export const keyWords = ["true", "false", "null", "undefined", "NaN", "Infinity"];
 
 export type NodeType = NodeDef["type"] | "Other" | "Error";
 export type NodeArg = Exclude<NodeDef["args"], undefined>[number];
diff --git a/src/misc/b3util.ts b/src/misc/b3util.ts
index f5b48ea..dfd6bc9 100644
--- a/src/misc/b3util.ts
+++ b/src/misc/b3util.ts
@@ -12,6 +12,7 @@ import {
   isIntType,
   isJsonType,
   isStringType,
+  keyWords,
   NodeArg,
   NodeData,
   TreeData,
@@ -141,7 +142,7 @@ export const isNewVersion = (version: string) => {
 };
 
 export const isValidVariableName = (name: string) => {
-  return /^[a-zA-Z_$][a-zA-Z_$0-9]*$/.test(name);
+  return /^[a-zA-Z_$][a-zA-Z_$0-9]*$/.test(name) && !keyWords.includes(name);
 };
 
 export const isSubtreeRoot = (data: NodeData) => {