replaced id urls with title dynamic

[eluser]SaSa[/eluser]
I can replaced urls bottom together, Like:

Code:

http://localhost/zig-co/blog?id=7

to

Code:

http://localhost/zig-co/miniblog/7

with this:

Code:

RewriteEngine on
RewriteRule ^miniblog/([0-9]+)/?$ blog?id=$1 [NC,L]

but can not replaced urls bottom together, Like:

Code:

http://localhost/zig-co/blog?id=7

to

Code:

http://localhost/zig-co/miniblog/کت-و-شلوار

with this:

Code:

RewriteEngine on
RewriteRule ^miniblog/(.*)/?$ blog?url=$1 [NC,L]

do you can help me or guidance me?