target variable of another script

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

53947-target.jpg

using UnityEngine;
using UnityStandardAssets.Effects;
public class MyScript : MonoBehaviour {

	void Start () {
		var something = FindObjectOfType<ParticleSystemMultiplier> ();
		something.multiplier = 3.0f;
	}
}