nginx real_ip_header x-forwarded not work

Hello
all of my visitors ip show on my server ips
i use nginx+apache+php-fpm
but when i use apache+php-fpm it should be ok

many times i set vhost and nginx.config

set_real_ip_from xxx.xx.xxx.x;
set_real_ip_from xx.xxx.xxx.xx;
real_ip_header X-Forwarded-For;
real_ip_recursive on;
but not work
i try many times many way still not work
plz help me on this issue
Thanks Team