htaccess change url to lowercase using RewriteMap

I would like the below code to convert the new url to lowercase,

I have found some examples, but can't seem to get it to work.
http://balajin.net/blog/archives/2005/10/07/using_mod_rewrite_to_convert_u.html
RewriteCond %{QUERY_STRING} ^param=([a-zA-Z0-9_-]*)$
RewriteRule ^index\.php$ /ff/%1? [R,L]

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thydzikAsked:
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Brad HoweConnect With a Mentor DevOps ManagerCommented:
Hi,
RewriteEngine On
RewriteMap  lc int:tolower
RewriteCond %{REQUEST_URI} [A-Z]
RewriteRule (.*) ${lc:$1} [R=301,L]

Note that the RewriteMap directive can only be used in the httpd.conf and not in a .htaccess.
Cheers,
Hades666
 
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geoffkendalConnect With a Mentor Commented:
i found this...

rewriteEngine on
rewriteMap lowercase int:tolower
rewriteCond $1 [A-Z]
rewriteRule ^/(.*)$ /${lowercase:$1} [R=301,L]
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