This was a problem that came up in the JavaScript Mastery discord server, and I wasn't giving up until I figured it out. ```js let thestring = 'A string with a β'; for (let x = 0; x < thestring.length; x++) { if (thestring.charCodeAt(x) > 127) { let before = thestring.substring(0, x); let problem = thestring.substring(x, x+1); let after = thestring.substring(x+1); problem = problem.codePointAt(0); problem = '\\u0' + problem.toString(16); thestring = before + problem + after; } } console.log(thestring); ``` Let's break that down: ```js let thestring = 'A string with a β'; ``` `β` is our Unicode character we want to convert into a \u0XXX value. ```js for (let x = 0; x < thestring.length; x++) { ``` We're going to loop through the characters of `thestring`... ```js if (thestring.charCodeAt(x) > 127) { ``` ...and check their character codes, one by one. The first 128 character codes are ASCII symbols. Everything else is Unicode. ```js let before = thestring.substring(0, x); let problem = thestring.substring(x, x+1); let after = thestring.substring(x+1); ``` Using `thestring.substring()` we've now broken the string down into what comes before and after the problem, and the single-character `problem` itself. ```js problem = problem.codePointAt(0); ``` This gets the Unicode value of the character at position 0 of the `problem` variable. ```js problem = '\\u0' + problem.toString(16); ``` `problem.toString(16)` converts the code point integer to a hexadecimal string, which we prepend with `\u0` to make it a Unicode symbol. ```js thestring = before + problem + after; ``` We put the string back together and continue the loop. ```js } } console.log(thestring); ``` Try it yourself!