diff --git a/cloud-functions/python/functions/performance/main.py b/cloud-functions/python/functions/performance/main.py
index e528f14..e83663e 100644
--- a/cloud-functions/python/functions/performance/main.py
+++ b/cloud-functions/python/functions/performance/main.py
@@ -9,7 +9,7 @@ import sys
 import platform
 import os
 import io
-from flask import send_file
+from flask import make_response, send_file
 from datetime import datetime
 import re
 import xlsxwriter
@@ -33,8 +33,8 @@ def performance(request):
     if request.method == 'OPTIONS':
         headers = {
             'Access-Control-Allow-Origin': '*',
-            'Access-Control-Allow-Methods': 'GET',
-            'Access-Control-Allow-Headers': 'Content-Type',
+            'Access-Control-Allow-Methods': 'GET, POST',
+            # 'Access-Control-Allow-Headers': '*',
             # 'Access-Control-Max-Age': '3600'
         }
 
@@ -320,4 +320,5 @@ def performance(request):
         file_data = io.BytesIO(f.read())  
 
     # application/vnd.ms-excel
-    return send_file(file_data, download_name= output_filename, mimetype="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
\ No newline at end of file
+    response = make_response(send_file(file_data, download_name= output_filename, mimetype="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"), 200, headers)
+    return response
\ No newline at end of file