limit_conn with variables erroring with invalid number of connections

[justink101]

Here is the configuration:

http {
    limit_conn_zone $binary_remote_addr zone=limitapinoauth:16m;
    limit_conn_zone $remote_user zone=limitapi:32m;
    
    map $remote_user $limit_zone {
        default   limitapi;
        ''        limitapinoauth;
    }

    map $remote_user $limit_number {
        default   100;
        ''        200;
    }
}

server {
    limit_conn $limit_zone $limit_number;
}

When starting NGINX getting a fatal error though. Does limit_conn support
using variables?

error => invalid number of connections "$limit_number"

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,273805,273805#msg-273805