---
id: cf1111c1c11feddfaeb8bdef
title: Modify Array Data With Indexes
challengeType: 1
videoUrl: ''
localeTitle: ''
---
## Description
undefined
## Instructions
undefined
## Tests
```yml
tests:
- text: ''
testString: 'assert((function(){if(typeof myArray != "undefined" && myArray[0] == 45 && myArray[1] == 64 && myArray[2] == 99){return true;}else{return false;}})(), "myArray should now be [45,64,99].");'
- text: ''
testString: 'assert((function(){if(code.match(/myArray\[0\]\s*=\s*/g)){return true;}else{return false;}})(), "You should be using correct index to modify the value in myArray.");'
```
## Challenge Seed
```js
// Example
var ourArray = [18,64,99];
ourArray[1] = 45; // ourArray now equals [18,45,99].
// Setup
var myArray = [18,64,99];
// Only change code below this line.
```