# IsConfig Property

## Overloads

| [IsConfig](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxVariableListItem.IsConfig.htm#Qlik_Engine_INxVariableListItem_IsConfig) |  | If set to true, it means that the variable is a system variable.<br><br>A system variable provides information about the system and is set by the engine. The content cannot be changed by the user.<br><br>This parameter is optional.<br><br>The default value is false.<br><br>JSON property name: qIsConfig |
| --- | --- | --- |

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

## IsConfig

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

A system variable provides information about the system and is set by the engine. The content cannot be changed by the user.

This parameter is optional.

The default value is false.

JSON property name: qIsConfig

### Declaration

```

          bool IsConfig { get; set; }
    
  
```

### Property Value

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