# GH_NumericScrollerValueEditor.OnValueChangedEventHandler delegate

Namespace: [Grasshopper.GUI](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.gui.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
public delegate GH_NumericScrollerValueEditor.OnValueChangedEventHandler
```

**Signature:**

```cs
void GH_NumericScrollerValueEditor.OnValueChangedEventHandler(GH_NumericScrollerValueEditor sender, decimal lower, decimal upper, decimal value)
```

**Parameters:**

- `sender` ([GH_NumericScrollerValueEditor](https://developer.rhino3d.com/api/gh1/type/grasshopper.gui.gh-numericscrollervalueeditor.md))
- `lower` ([decimal](https://learn.microsoft.com/dotnet/api/system.decimal))
- `upper` ([decimal](https://learn.microsoft.com/dotnet/api/system.decimal))
- `value` ([decimal](https://learn.microsoft.com/dotnet/api/system.decimal))