---
title: "perform(_:)"
framework: Professional Video Applications
role: symbol
role_heading: Instance Method
platforms: [fxplug 4.1+]
path: "professional_video_applications/fxcommandapi/perform(_:)"
---

# perform(_:)

Instructs the host application to perform a command.

## Declaration

```swift
func perform(_ command: FxCommand) throws
```

## Parameters

- `command`: The command you wish the host application to perform.