diff --git a/app/custom_scripts/examples.py b/app/custom_scripts/examples.py
index 9af681f..5650933 100644
--- a/app/custom_scripts/examples.py
+++ b/app/custom_scripts/examples.py
@@ -11,6 +11,10 @@
 
 @script(target_cell="[xlwings_button]Sheet1!B4")
 def hello_world(book: xw.Book):
+    import time
+
+    time.sleep(2)
+    print("xxxxxxxxxxxxxxxxxxxxxxxx")
     sheet = book.sheets.active
     cell = sheet["A1"]
     if cell.value == "Hello xlwings!":
diff --git a/app/routers/xlwings.py b/app/routers/xlwings.py
index cc1564b..cba6211 100644
--- a/app/routers/xlwings.py
+++ b/app/routers/xlwings.py
@@ -104,12 +104,15 @@ async def custom_functions_call(
 @router.post("/custom-scripts-call/{script_name}")
 async def custom_scripts_call(script_name: str, book: dep.Book, current_user: dep.User):
     logger.info(f"""Script "{script_name}" called by {current_user.name}""")
+    empty_book = book
     book = await xlwings.server.custom_scripts_call(
         custom_scripts,
         script_name,
         current_user,
         typehint_to_value={CurrentUser: current_user, xw.Book: book},
     )
+    if isinstance(book, dict):
+        return empty_book.json()
     return book.json()