# limitX

> Maximum velocity curve for the x-axis.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

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

### Remarks

Additional Resources: [ParticleSystem.MinMaxCurve](/engine/6000.0/script-reference/unityengine/particlesystem/minmaxcurve.md).

### Examples

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

[RequireComponent(typeof(ParticleSystem))]
public class ExampleClass : MonoBehaviour
{
    private ParticleSystem ps;
    public float hSliderValueSpeedX = 0.0f;
    public float hSliderValueSpeedY = 0.0f;
    public float hSliderValueSpeedZ = 0.0f;
    public float hSliderValueDampen = 0.1f;

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

        var limitVelocityOverLifetime = ps.limitVelocityOverLifetime;
        limitVelocityOverLifetime.enabled = true;
        limitVelocityOverLifetime.separateAxes = true;
    }

    void Update()
    {
        var limitVelocityOverLifetime = ps.limitVelocityOverLifetime;
        limitVelocityOverLifetime.limitX = hSliderValueSpeedX;
        limitVelocityOverLifetime.limitY = hSliderValueSpeedY;
        limitVelocityOverLifetime.limitZ = hSliderValueSpeedZ;
        limitVelocityOverLifetime.dampen = hSliderValueDampen;
    }

    void OnGUI()
    {
        GUI.Label(new Rect(25, 40, 100, 30), "Speed Limit X");
        GUI.Label(new Rect(25, 80, 100, 30), "Speed Limit Y");
        GUI.Label(new Rect(25, 120, 100, 30), "Speed Limit Z");
        GUI.Label(new Rect(25, 160, 100, 30), "Dampen");

        hSliderValueSpeedX = GUI.HorizontalSlider(new Rect(135, 45, 100, 30), hSliderValueSpeedX, 0.0f, 2.0f);
        hSliderValueSpeedY = GUI.HorizontalSlider(new Rect(135, 85, 100, 30), hSliderValueSpeedY, 0.0f, 2.0f);
        hSliderValueSpeedZ = GUI.HorizontalSlider(new Rect(135, 125, 100, 30), hSliderValueSpeedZ, 0.0f, 2.0f);
        hSliderValueDampen = GUI.HorizontalSlider(new Rect(135, 165, 100, 30), hSliderValueDampen, 0.0f, 1.0f);
    }
}
```