**Tell us what’s happening:**

I tried making a function that takes a parameter, and puts every number less then the parameter up to zero and pushes it into an array(descending order). and then used a for loop to multiply each index of the array by the next index, but my return comes back null. please help.

**Your code so far**

```
function factorialize(num) {
var arrayOfFactorial = [];
var factorial = 1;
for(var i = num;i > 0;i--){
arrayOfFactorial.push([i]);
factorial = factorial * arrayOfFactorial[i];
}
return factorial;
}
factorialize(5);
```

**Your browser information:**

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**Link to the challenge:**