Apache Web Server Forum

RewriteRule ^used/([^/]+)/cars/?$ used/mks.asp?used=$1 [NC,NE,L]

I tried putting this tolower rule in but it doesn't work.

RewriteMap lower int:tolower
RewriteRule ^used/([^/]+)/cars/?$ used/mks.asp?used=${lower:$1} [NC,NE,L]

I have tried several different variations but still no luck - can it be done?