# IReferenceLineExpression Interface

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

## Syntax

```
public interface IReferenceLineExpression : IAbstractStructure
```

## Properties

| Name | Description |
| --- | --- |
| [CId](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Sense.Client.Visualizations.Components.IReferenceLineExpression.CId.htm#Qlik_Sense_Client_Visualizations_Components_IReferenceLineExpression_CId) | Id used by client. Needs to be unique within the array of reference lines.<br><br>JSON property name: cId |
| [Label](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Sense.Client.Visualizations.Components.IReferenceLineExpression.Label.htm#Qlik_Sense_Client_Visualizations_Components_IReferenceLineExpression_Label) | JSON property name: label |
| [Value](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Sense.Client.Visualizations.Components.IReferenceLineExpression.Value.htm#Qlik_Sense_Client_Visualizations_Components_IReferenceLineExpression_Value) | JSON property name: value |