My web site has 3 languages: English, Japanese and Chinese.

There are form page and English and Japanese error message is showing fine but Chinese page still show English message,

ex)
Chinese page - "电邮" is required.
"is required" should be in Chinese

When I edit _config.php adding code bellow.
Japanese error message immediately start showing.

_config.php

======================================================
Translatable::set_allowed_locales(array(
   'en_US', //US English
   'ja_JP', //Japanese
   'zh_yue'  //Chinese (Cantonese)   
   )
);

Object::add_extension('SiteTree', 'Translatable');
Object::add_extension('SiteConfig', 'Translatable');
======================================================

What do I need to do to show Chinese(zh_yue) error message?

Hi leafchild.

Not quite sure, but i think this is happening, because there are no language files for
'zh_yue' (have a look at /sapphire/lang and /cms/lang dirs). So the default messages are shown.

You could change 'zh_yue'//Chinese (Cantonese) to 'zh_CN'//Chinese (China) and check if the correct error message appears.
If so, you might have to create a language file for zh_yue (... and share it with us :-))

Cheers
Christian

Thanks, Invader_Zim

Actually, I already created both file and place to the directory:"sapphire/lang/zh_YUE.php" and "cms/lang/zh_YUE.php"

I copied form zh_CH.php file and inside of file replace all "zh_Ch" to "zh_YUE" but
the error message is still same.