# INxExpressionCubeDef Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

## Syntax

```
[ValueClass]
public interface INxExpressionCubeDef : IAbstractStructure
```

## Properties

| Name | Description |
| --- | --- |
| [Expression](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxExpressionCubeDef.Expression.htm#Qlik_Engine_INxExpressionCubeDef_Expression) | JSON property name: qExpression |
| [If](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.INxExpressionCubeDef.If.htm#Qlik_Engine_INxExpressionCubeDef_If) | JSON property name: qIf |