---
url: /statelake/scripting-reference/data-types/boolean.md
---

# Boolean

Boolean is used to represent **True** or **False** values, so you use the keywords **True** and **False** to assign one of the two states to a **Boolean** variable.

The default value for a **Boolean** data type is **False**.

When a **Boolean** is represented as a numeric value, **False** is equal to 0 and **True** is equal to 1.

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.

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**.

**Declaration**: var myvariable : boolean

The following is an example of a **Boolean** variable.

```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;
```