Multibyte characters validation problem

[eluser]fensen[/eluser]
Hi,

I'm developing a website for Japan.

I'm having difficulties with the Validation Class handling multibyte characters. I have a 100-character text field:

Code:

$rules['text'] = "max_length[100]";

When I input single byte text (English alphabet characters) the 100 limit is correctly validated.

But when I input Japanese text, I can only input 33 characters. If I input 34 characters I get the error message saying that the limit is 100 chars.

Sometimes I need to input English and Japanese text together.

Any ideas?

Thanks in advance