# ICheckExpressionResult Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

## Syntax

```
[ValueClass]
public interface ICheckExpressionResult
```

## Properties

| Name | Description |
| --- | --- |
| [BadFieldNames](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ICheckExpressionResult.BadFieldNames.htm#Qlik_Engine_ICheckExpressionResult_BadFieldNames) | JSON property name: qBadFieldNames |
| [DangerousFieldNames](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ICheckExpressionResult.DangerousFieldNames.htm#Qlik_Engine_ICheckExpressionResult_DangerousFieldNames) | JSON property name: qDangerousFieldNames |
| [ErrorMsg](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ICheckExpressionResult.ErrorMsg.htm#Qlik_Engine_ICheckExpressionResult_ErrorMsg) | JSON property name: qErrorMsg |