var floatRangeProperty : String = "Saturation";
var cycleTime : float = 10;
function Update () {
	var substance : ProceduralMaterial = renderer.sharedMaterial as ProceduralMaterial;
	if (substance) {
		// Make the property go up and down over time
		var lerp = Mathf.PingPong (Time.time * 2 / cycleTime, 1);
		substance.SetProceduralFloat (floatRangeProperty, lerp);
		substance.RebuildTextures ();
	}
}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public string floatRangeProperty = "Saturation";
    public float cycleTime = 10;
    void Update() {
        ProceduralMaterial substance = renderer.sharedMaterial as ProceduralMaterial;
        if (substance) {
            float lerp = Mathf.PingPong(Time.time * 2 / cycleTime, 1);
            substance.SetProceduralFloat(floatRangeProperty, lerp);
            substance.RebuildTextures();
        }
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public floatRangeProperty as string = 'Saturation'

	public cycleTime as float = 10

	def Update() as void:
		substance as ProceduralMaterial = (renderer.sharedMaterial as ProceduralMaterial)
		if substance:
			lerp as float = Mathf.PingPong(((Time.time * 2) / cycleTime), 1)
			substance.SetProceduralFloat(floatRangeProperty, lerp)
			substance.RebuildTextures()