diff --git a/app/assets/js/core-js-3.49.0.wsh.js b/app/assets/js/core-js-3.49.0.wsh.js
index 212a995..e715ac3 100644
--- a/app/assets/js/core-js-3.49.0.wsh.js
+++ b/app/assets/js/core-js-3.49.0.wsh.js
@@ -2418,8 +2418,12 @@ var NullProtoObjectViaSc64bit = function () {
     sc64bit.Language = 'JScript';
     return sc64bit.Eval('Object');
   } catch (error) {
-    // Throw explicit error if ScriptControl is not available in 64-bit environment
-    throw new Error('A compatible ScriptControl version is required to support null-prototype objects on 64-bit environments.');
+    // If all attempts to retrieve a new object from an external instance fail,
+    // the existing object is returned.
+    // This prevents errors during the key deletion process using enumBugKeys afterward.
+    return function () {
+      return {};
+    };
   }
 }
 
diff --git a/data/claude_desktop_config.example.json b/data/claude_desktop_config.example.json
new file mode 100644
index 0000000..54eaf50
--- /dev/null
+++ b/data/claude_desktop_config.example.json
@@ -0,0 +1,19 @@
+{
+  "mcpServers": {
+    "local-tools": {
+      "command": "C:/Windows/SysWOW64/cscript",
+      "args": [
+        "/nologo",
+        "C:/Users/user/Documents/GitHub/welsonjs/app.js",
+        "mcploader",
+        "/quiet"
+      ]
+    }
+  },
+  "preferences": {
+    "coworkScheduledTasksEnabled": false,
+    "ccdScheduledTasksEnabled": false,
+    "coworkWebSearchEnabled": true,
+    "sidebarMode": "chat"
+  }
+}
\ No newline at end of file
diff --git a/examples/fix_excel_format.js b/examples/fix_excel_format.js
new file mode 100644
index 0000000..5543b6e
--- /dev/null
+++ b/examples/fix_excel_format.js
@@ -0,0 +1,56 @@
+// fix_excel_format.js
+// This script requires the WelsonJS framework.
+var Office = require("lib/msoffice");
+
+function main(args) {
+	var excel = new Office.Excel();   // Create a Excel instance
+	excel.open("data\\fulllist.xlsx");   // Open a Excel window
+	
+	// select the worksheet
+	excel.selectWorksheet(2);
+	
+	for (var i = 0; i < 34; i++) {
+		var rownum = 2 + i;
+		
+		var company_name = excel.getCellByPosition(rownum, 3).getValue();
+		var reservation_time = excel.getCellByPosition(rownum, 7).getValue();
+		var resource_name = excel.getCellByPosition(rownum, 8).getValue();
+		var port_number = excel.getCellByPosition(rownum, 9).getValue();
+		var bandwidth = excel.getCellByPosition(rownum, 10).getValue();
+		
+		console.log("================");
+        console.log("Company Name: " + company_name);
+        console.log("Reservation Time: " + reservation_time);
+        console.log("Resource Name: " + resource_name);
+        console.log("Port Number: " + port_number);
+        console.log("Bandwidth: " + bandwidth);
+        console.log("================");
+        
+        make_card_file({
+            "company_name": company_name,
+            "reservation_time": reservation_time,
+            "resource_name": resource_name,
+            "port_number": port_number,
+            "bandwidth": bandwidth
+        });
+    }
+}
+
+function make_card_file(data) {
+    var excel = new Office.Excel();
+    
+    excel.open("card_format.xlsx");
+    
+    excel.getCellByPosition(2, 1).setValue(data.company_name);
+    excel.getCellByPosition(2, 2).setValue(!data.resource_name ? "127.0.0.1" : data.resource_name);
+    excel.getCellByPosition(2, 3).setValue(!data.port_number ? "80" : data.port_number);
+    excel.getCellByPosition(2, 4).setValue(!data.bandwidth ? "100M" : data.bandwidth);
+    excel.getCellByPosition(2, 5).setValue(data.reservation_time);
+    
+    var file_name = String(data.company_name) + "_card.xlsx";
+    excel.saveAs("data\\" + file_name);
+    
+    excel.close();
+}
+
+exports.main = main;