# AddParameter(FilterParameter)

> Adds a parameter to the filter function.

## Definition

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

```csharp
public void AddParameter(FilterParameter p)
```

### Parameters

**** (\[FilterParameter]\(/engine/6000.6/script-reference/unityengine/uielements/filterparameter)): The parameter to add.