---
url: /flow/guide/scripting-reference/data-types/boolean.md
---

# Boolean (Boolean)

## Declaration

`var myvariable : boolean`

### Example

```pascal
procedure ScriptEvent (var Value : variant)
var myvariable : boolean
begin
myvariable := True; //you could also set to False
if myvariable = True then
loginfo('the myvariable boolean variable is true');
end
```

## Description

Boolean is used to represent `True` or `False` values. Use the keywords True and False to assign one of the two states to a Boolean variable.

When a boolean can also be represented as a numeric value - False is equal to 0, True is equal to 1.

::: tip
If a field within a DB Definition is specified as Boolean then it may require a display format for it to be correctly saved to the database. This is because the database represents the boolean as a numeric. Use the display format `1;0` to convert the boolean to a numeric when saving to the database.
:::

::: tip
If a field within a File Definition is specified as a Boolean then it may require a display format for it to be correctly saved to the file. You can use display formats such as `1;0` or `True;False` or `TRUE;FALSE`
:::