character counter for meta boxes (meta title, meta description etc.)

[mehmesen]

Hello

How can I put a character counter in the meta boxes (meta title, meta description) on the Virtuemart admin product adding page?

(Only visible on admin page)

Thanks

Example;

$simple = "$meta-title-box";

echo strlen($simple);

[mehmesen]

Thanks

Can I get the file path of the product editing page back-end the site?

Best regards