Is it possible to get this to work with an arrow function syntax? I tried and the code simply failed to work =/

Running the code as is in the video works. But the below code fails to run, even though I believe it is written correctly, syntax wise:

let randomNumber = getRandomNumber(10); let guess; let guessCount = 0; let correctGuess = false; //often call this a "Flag" to wave for logic // //function getRandomNumber(upper) { // let num = Math.floor(Math.random() * upper) + 1; // return num; //}

const getRandomNumber = (10) => { let num = Math.floor(Math.random() * upper) + 1; return num; }

do { guess = prompt('I am thinking of a number between 1 and 10. What is it?'); guessCount += 1; if (parseInt(guess) === randomNumber) { correctGuess = true; } } while (!correctGuess) document.write('<h1>You guessed the correct number!</h1>'); document.write('And to think...it only took you ' + guessCount + ' tries to guess ' + randomNumber + ' ^_^');

Please let me know your thoughts. Thank you!