What is the correct command for node.js?

Question

Node.js

Good evening, I'm trying to get the server to change the request's url, but all to no avail.

var http = require("http");
 
http.createServer(function(req, res) {
 
    // initialize the body to get the data asynchronously
    req.body = "";
 
    // get the data of the body
    req.on('data', function (chunk) {
        req.body += chunk;
        console.log(chunk);
    });
     
    
    //all data
    req.on('end', function () {
       
        if ((id = req.url.match("^/hello/([a-z]+)$"))) {
           if (req.method == "GET") {
                res.writeHead(200, {'Content-Type': 'text/plain'});
                res.end('WE HAVE A WINNER');
            }
        } else {
            res.writeHead(200, {'Content-Type': 'text/plain'});
            if(req.url == ""){ res.end('Hello empty url') } else{
                res.end("Hello wrong input" + req.url);
            }
        }
    });
 
}).listen(8080);

This is what the code looks like.
Everything is fine until it comes to the team.
Can't change req.url using console. What should the team look like?
In the body of the program, everything comes out, I write req.url = "/hello/chtoto"
Everything works, it gives out "WE HAVE A WINNER".