Nginx Reverse Proxy "Cache status header"

So i’m trying to set the cache status header… I’ve tried every way I can find. It doesn’t work. Nothing shows. Module below. Am I missing the one needed for that?

http_addition_module http_auth_request_module http_dav_module http_flv_module http_gunzip_module http_gzip_static_module http_mp4_module http_random_index_module http_realip_module http_secure_link_module http_slice_module http_ssl_module http_stub_status_module http_sub_module http_v2_module mail_ssl_module stream_realip_module stream_ssl_module stream_ssl_preread_module