# FilterParameterDeclaration

> The filter parameter declaration for a FilterFunctionDefinition.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine.UIElements](/engine/6000.6/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public struct FilterParameterDeclaration
```

## Properties

| Property                                                                                                                                    | Description                                                                     |
| ------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------- |
| [interpolationDefaultValue](/engine/6000.6/script-reference/unityengine/uielements/filterparameterdeclaration/interpolationdefaultvalue.md) | Default value when interpolating between two filters with missing declarations. |
| [name](/engine/6000.6/script-reference/unityengine/uielements/filterparameterdeclaration/name.md)                                           | The parameter name, used for display in the UI Builder.                         |