# IsReserved Property

## Overloads

| [IsReserved](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxVariableListItem.IsReserved.htm#Qlik_Engine_INxVariableListItem_IsReserved) |  | If set to true, it means that the variable is reserved.<br><br>The default value is false.<br><br>This parameter is optional.<br><br>Examples:<br><br>\* `ScriptError` is a reserved variable, set by the engine.<br><br>\* `DayNames` is a reserved variable, set by the user.<br><br>JSON property name: qIsReserved |
| --- | --- | --- |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxVariableListItem.IsReserved.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxVariableListItem.IsReserved.htm)

## IsReserved

If set to true, it means that the variable is reserved.

The default value is false.

This parameter is optional.

Examples:

* ScriptError is a reserved variable, set by the engine.
* DayNames is a reserved variable, set by the user.

JSON property name: qIsReserved

### Declaration

```

          bool IsReserved { get; set; }
    
  
```

### Property Value

| Type | Description |
| --- | --- |
| System.Boolean |  |