Redirect Problem (.htaccess)

I am currently trying to redirect all domains follow this structure:
http://www.domain.com/ad/lorem/ipsum/calor/3/
To redirect to:
http://www.domain.com/ad/3/

Here's what I have:

RedirectMatch 301 ^ad/([^./]+)/([^./]+)/([^./]+)/([^./]+)/\$ http://www.domain.com/ad/$4

Code (markup):

It doesn't seem to work - any help? Thanks!

 

Try this...

 

I seem to get a 500 internal server error with that.

 

Try this

RewriteEngine on
RewriteRule    ^ad/.+/([\d]+)/    ad/$1/    [R=301,L]

Code (markup):

 

Unfortunately, no.

 

I am just wondering, if mod_rewrite is enabled in your server????

 

If you're not sure how to find out, put this:

<IfModule mod_rewrite.c>
(your code here)
</IfModule>

Code (markup):

around your redirect code and let us know what you get as output.