Nginx rewrite not work

nginx rewite does not work. Now I use it for the first time, so I haven't got a lot of it yet. I have such a link: myhost.ddns.net/newproj/index.php?oldal=menu1 I want to convert this. I tried it in several ways, but it doesn't work.
location /newproj/ {rewrite ^/index/(.*)$ /index.php?oldal=$1 last; }
what's the problem?
(Sorry for my english)