Weird vector 3 problem

hey guys i get this weird error when i use a random.range a vector.

this is my script:
i was random testing something.

using UnityEngine;
using System.Collections;

public class TestingRandom : MonoBehaviour {
	float a=0;
	float b=0;
	float c=0;
	public Vector3 test;
	// Use this for initialization
	void Start () {

	// Update is called once per frame
	void Update () {

but i get the error: unexpected symbol ‘,’, expecting ‘)’;

and i get that error on line: test=(Random.Range(-10f,10f),Random.Range(-10f,10f),Random.Range(-10f,10f));

any idea what im doing wrong?

I think you need new Vector3.

test = new Vector3(Random.Range(-10f,10f),Random.Range(-10f,10f),Random.Range(-10f,10f));

You can also use Random.OnUnitSphere to give you a point along a sphere of radius one, which seems like it would work here very well

test = Random.OnUnitSphere * 10f;