# multiplierCurve

> Multiplies the magnitude of applied external forces.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public ParticleSystem.MinMaxCurve multiplierCurve { get; set; }
```

### Examples

```csharp
using UnityEngine;
using System.Collections;

[RequireComponent(typeof(ParticleSystem))]
public class ExampleClass : MonoBehaviour
{
    private ParticleSystem ps;
    public bool moduleEnabled = true;
    public float hSliderValue = 10.0f;

    void Start()
    {
        ps = GetComponent<ParticleSystem>();

        GameObject wind = new GameObject("Wind", typeof(WindZone));
        wind.transform.parent = ps.transform;
        wind.transform.localPosition = new Vector3(-4.0f, 0.0f, 0.0f);
        wind.GetComponent<WindZone>().mode = WindZoneMode.Spherical;
    }

    void Update()
    {
        var externalForces = ps.externalForces;
        externalForces.enabled = moduleEnabled;
        externalForces.multiplierCurve = hSliderValue;
    }

    void OnGUI()
    {
        moduleEnabled = GUI.Toggle(new Rect(25, 45, 100, 30), moduleEnabled, "Enabled");
        hSliderValue = GUI.HorizontalSlider(new Rect(25, 85, 100, 30), hSliderValue, 0.0f, 100.0f);
    }
}
```