---
title: lMagnitude
framework: Force Feedback
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.2+]
path: forcefeedback/ffconstantforce/lmagnitude
---

# lMagnitude

The magnitude of the effect, in the range from -10,000 through 10,000. If an envelope is applied to this effect, the value represents the magnitude of the sustain. If no envelope is applied, the value represents the amplitude of the entire effect.

## Declaration

```swift
var lMagnitude: LONG
```