How do I target the multiplier? I keep getting confused by the samples.

How do I target the multiplier? I keep getting confused by the samples.

using UnityEngine;
using UnityStandardAssets.Effects;
public class MyScript : MonoBehaviour {
void Start () {
var something = FindObjectOfType<ParticleSystemMultiplier> ();
something.multiplier = 3.0f;
}
}