pxt-calliope/docs/blocks/variables/change.md

# @extends

## #examples

## Example: show the value of a variable

Use the assignment operator to set the value of a [variable](/blocks/variables/var). Change the value of a variable from 0 to 1 using the change item block. Then display the new value of the variable on the LED screen. Like this:

```blocks
let x = 0;
x += 1;
basic.showNumber(x);
```