Restrict Possible Usernames wrong hint

I used the get hint answer however it is not correct
The answer uses {} which i dont remember seeing in previous lesson

Your code so far


let username = "JackOfAllTrades";
let userCheck = /^[a-z]{2,}\d*$/i; // Change this line
let result = userCheck.test(username);
console.log(result)

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.81 Safari/537.36.