Сочетание $whitelist $limit и $server_protocol в NGINX?

Кажется решил сам задачу, вот как:

map "$whitelist:$server_protocol" $limit1 {
"1:HTTP/1.0" "";
"1:HTTP/1.1" "";
"1:HTTP/2.0" "";
"0:HTTP/1.1" "$binary_remote_addr";
}
limit_req_zone $limit1 zone=bot11:10m rate=5r/m;

map "$whitelist:$server_protocol" $limit2 {
"0:HTTP/1.0" "$binary_remote_addr";
}
limit_req_zone $limit2 zone=bot10:10m rate=1r/m;

map "$whitelist:$server_protocol" $limit3 {
"0:HTTP/2.0" "$binary_remote_addr";
}
limit_req_zone $limit3 zone=vse:10m rate=15r/m;

Сочетание $whitelist $limit и $server_protocol в NGINX?

Мне тут мысль пришла. А можно вот так?:

map "$whitelist:$server_protocol" $bot {
"1:HTTP/1.0" "";
"1:HTTP/1.1" "";
"1:HTTP/2.0" "";
"0:HTTP/1.1" "$binary_remote_addr zone=$zon1:10m rate=5r/m";
"0:HTTP/1.0" "$binary_remote_addr zone=$zon2:10m rate=1r/m";
"0:HTTP/2.0" "$binary_remote_addr zone=$zon3:10m rate=15r/m";
}
limit_req_zone $bot;

Вопрос по map в Nginx?

Так не работает
map $server_protocol $limit {
default 0;
"HTTP/1.0" $binary_remote_addr;
"HTTP/1.1" "";
"HTTP/2.0" "";
}
limit_req_zone $limit zone=bot:10m rate=1r/m;

ВОт так получаю сам 503

map $server_protocol $limit {
default 0;
"HTTP/1.0" $binary_remote_addr;
"HTTP/1.1" "2";
"HTTP/2.0" "3";
}
limit_req_zone $limit zone=bot:10m rate=1r/m;