**Tell us what’s happening:**

What is wrong with my code and why i get undefined in console?

**Your code so far**

```
function sumAll(arr) {
let arno = arr.sort((a,b) => a - b);
let arn = [];
for(let i = arno[0]; i < arno[1]; i++){
arn.push(i);
};
return arn.reduce((sum,num) => sum + num);
}
sumAll([1, 4]);
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0`

.

**Challenge:** Sum All Numbers in a Range

**Link to the challenge:**

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-numbers-in-a-range