# strengthZ

> Define the strength of the effect on the z-axis, when using the _separateAxes option.

## Definition

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

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

### Remarks

Additional Resources: [ParticleSystem.MinMaxCurve](/engine/6000.7/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 hSliderValueStrengthX = 1.0f;
    public float hSliderValueStrengthY = 1.0f;
    public float hSliderValueStrengthZ = 1.0f;

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

        var noise = ps.noise;
        noise.enabled = true;
        noise.separateAxes = true;

        // Set color by speed, to demonstrate the effects of the Noise Module
        var colorBySpeed = ps.colorBySpeed;
        colorBySpeed.enabled = true;

        Gradient gradient = new Gradient();
        gradient.SetKeys(
            new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) },
            new GradientAlphaKey[] { new GradientAlphaKey(1.0f, 0.0f), new GradientAlphaKey(1.0f, 1.0f) }
        );

        colorBySpeed.color = new ParticleSystem.MinMaxGradient(gradient);
        colorBySpeed.range = new Vector2(3.0f, 7.0f);
    }

    void Update()
    {
        var noise = ps.noise;
        noise.strengthX = hSliderValueStrengthX;
        noise.strengthY = hSliderValueStrengthY;
        noise.strengthZ = hSliderValueStrengthZ;
    }

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

        hSliderValueStrengthX = GUI.HorizontalSlider(new Rect(135, 45, 100, 30), hSliderValueStrengthX, 0.0f, 5.0f);
        hSliderValueStrengthY = GUI.HorizontalSlider(new Rect(135, 85, 100, 30), hSliderValueStrengthY, 0.0f, 5.0f);
        hSliderValueStrengthZ = GUI.HorizontalSlider(new Rect(135, 125, 100, 30), hSliderValueStrengthZ, 0.0f, 5.0f);
    }
}
```