# Overview

To replace the value of a single item with a different value, we can use that item's index and assign it a new value.

# Syntax
```
list_name[index] = newValue;
```
`list_name` is the name of the list.

# Code
Let's assume that we have a list that is named `numbers`.
```
List numbers = [20, 30, 40, 50, 60, 70];
```

We can use the code given below to change the value from `20` to `40` by using the index of `20`.


void main() {
  //Creating list
  List numbers = [20, 30, 40, 50, 60, 70];
  print('The list items before updating: ${numbers}');
  numbers[0] = 40 ; // The index of 20 is 0
  //display result
  print('The list items after updating: ${numbers}');
}

How to update a list item using its index in Dart

Update a list item in Dart using its index by assigning a new value directly.