# NOT

The NOT function returns TRUE if the argument is FALSE and FALSE if the argument is TRUE.

## Syntax

```javascript
not( logical_test )
```

## Arguments

logical\_test – The condition to be evaluated

## **Return value**

Either True or False

## **Example**

```javascript
if(not(Region == "West"), 50, 25)
```

Will return 50 if the region is not West otherwise returns 25

## **Excel equivalent**

[NOT](https://support.microsoft.com/en-us/office/not-function-9cfc6011-a054-40c7-a140-cd4ba2d87d77)