I am stuck guys need help pplease

my code is refusing to run

  **Your code so far**

// Only change code below this line
function countdown(n){
if (n = 1) {
  return [];
} else {
  const countArray = countdown(n - 1);
  countArray.push(n);
  return countArray;
}
}
// Only change code above this line
console.log(countdown(5))
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36.

Challenge: Use Recursion to Create a Countdown

Link to the challenge:

this part is the one that always execute, beccause n = 1 si an assignment not a comparison