Can't set mbstring.func_overload in htaccess?

[Mounty]

I've been converting the charset for my web app from latin1 to utf-8, and rather than replace the php built in single byte functions with the alternative multibyte functions, I would prefer to use the mbstring.func_overload value.

But for some reason setting this inside a .htaccess file doesn't seem to overwrite the local value! This is the line in the htaccess file:

PHP_VALUE mbstring.func_overload 7



I can't set this to the php.ini configuration as that would break my other websites on the server. Anyone have any other suggestions? I'm using php 5.3.0

[PHPycho]

does case sensitivity matters in .htaccess?
if yes then
php_value mbstring.func_overload 7