How to make a second input field in js?

Question

JavaScript

Hello, please tell me how to make the second input field in this script:

function ChangeColor(Element) {
                    swal("Введите ваш новый никнейм:", {
  content: "input",                      
})
.then((value) => {
  swal(`Ваш новый ник: ${value} успешно сохранен!`);
  function writeFile(name, value) {
var val = value;
if (value === undefined) {
val = "";
}
var download = document.createElement("a");
download.href = "data:text/plain;content-disposition=attachment;filename=file," + val;
download.download = name;
download.style.display = "none";
download.id = "download"; document.body.appendChild(download);
document.getElementById("download").click();
document.body.removeChild(download);
}

writeFile("MC.ini", `username=${value}
ram=-Xmx1G`);                  
});
                }

So that when the user entered his nickname, the second same field popped up for him, but with the text "Enter memory" and the received data was written instead -Xmx1Gand after that the MC.ini file with the filled data was downloaded.
Thank you very much in advance!