How to pass a parameter to message_handler?

Question

Python

There is a hanbler:

@dp.callback_query_handler(text="query")
    async def query_file(call: types.CallbackQuery):
        await call.answer(text=a, show_alert=True)

which works when the button is clicked:

inline_btn_1 = InlineKeyboardButton(' Уведомить', callback_data='query')
            inline_kb1 = InlineKeyboardMarkup().add(inline_btn_1)

The inline keyboard is attached to the user's message:

a = 36
bot.send_message(msg.from_user.id, f"К сожалению  {a} не найдено.\nНажмите на кнопку, чтобы получить уведомление ", reply_markup=inline_kb1)

The question is how to get the variable a from another handler and function in @dp.callback_query_handler(text="query")

Answer 1

Solved the issue using FSM