From db18d54b2132c53ab25ec6141b3b69c18bdce522 Mon Sep 17 00:00:00 2001
From: Kostiantyn Kriuchkov <36363097+Latand@users.noreply.github.com>
Date: Sat, 6 Apr 2019 20:26:58 +0100
Subject: [PATCH] Update callback_data.py

Can't pass 0 to value, raises error 'ValueError: Value for {part} is not passed!'
---
 aiogram/utils/callback_data.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/aiogram/utils/callback_data.py b/aiogram/utils/callback_data.py
index ddf3f764..916d08c4 100644
--- a/aiogram/utils/callback_data.py
+++ b/aiogram/utils/callback_data.py
@@ -55,7 +55,7 @@ class CallbackData:
 
         for part in self._part_names:
             value = kwargs.pop(part, None)
-            if not value:
+            if value is None:
                 if args:
                     value = args.pop(0)
                 else: