Hello ,
I have a problem.

RewriteRule ^dirs-([0-9]+)-([0-9]+).html directory.php?ax=list&sub=$1&cat_id=$2

Whenever i try to do this . I mean the original url in the directory is :
directory.php?ax=list&sub=$id&cat_id=$id
The first $id is for subcat value
And the second $id is for main cat value. I tried to rewrite it using the code above however it only printed out this part :
directory.php?ax=list
I mean it didn't include the rest : &sub=$1&cat_id=$2

Let me tell you what I exactly want so someone might help.
This is the original link in the script :
directory.php?ax=list&sub=$1&cat_id=$2
I want to make it :
directory-1-2.html (The "1" is for the $sub value and the second is the $cat_id value)

Any help would be truly appreciated .

Best Regarsds,
Umut Kale

Try

RewriteRule ^directory-([0-9]+)-([0-9]+).html$ directory.php?ax=list&sub=$1&cat_id=$2 [L]

I actually found it.
It was because of :
directory.php?ax=list&sub=$1 part.
it only recognized the ?ax=list part. When I put the ax=list variable at the end (directory.php?sub=$1&ax=list) it worked.

It would seem to me that you have no rule to handle the ax=list part as none of these are numbers and your regex only says, match any numbers in here.