Hi all I am having an issue with some coding I am doing in htaccess

RewriteRule ^blog/([^/\.]+)/?$ plugins/blog/index.php?tab=blog&step=2&pagename=$1 [L]

is the rule I have, its fine here: http://www.domain.co.uk/plugins/blog...name=blah-blah

but I want

http://www.domain.co.uk/blog/blah-blah/

I am using a case in the php but I don't know what I am missing?