---
id: 5d79253639028b8ec56afcda
title: Part 066
challengeType: 0
isBeta: true
---
## Description
Replace the body of `addChars`, so that instead of adding the arguments, it returns a `charRange` between the first two arguments: `c1 => c2 => n => charRange(c1, c2)`.
## Instructions
## Tests
```yml
tests:
- text: See description above for instructions.
testString: assert(code.replace(/\s/g, "").includes("constaddChars=c1=>c2=>n=>charRange(c1,c2)"));
```
## Challenge Seed
```html
```
### Before Test
### After Test
```html
```
## Solution