htaccess rewriterule help needed

hi,
i need a little help for my rewriterule.

script output is:

http://www.mydomain.com/index.php?search=lorem+ipsum&source=All

Code (markup):

it should be looking like this:

http://www.mydomain.com/lorem+ipsum.html

Code (markup):

i tried :

RewriteRule ^([^/]*)\.html$ /index.php?search=$1&source=All [L]

Code (markup):

but output is still the same.