How to make a character bounce?

I'm making a game where the character has to reach the top by bouncing on various objects. This is the script I have so far:

var bounce : float = 1.0; var Player : Transform;

function OnCollisionEnter (other : Collision) { bounce = 1.0; if(other.gameObject.tag == "Blue") bounce = 10.0; if(other.gameObject.tag == "Red") bounce = 0.0; if(other.gameObject.tag == "Gold") bounce = 20.0; }

function Update () { if(bounce>1.0) Player.rigidbody.velocity.y = bounce; bounce = 1.0; }

but when I put it on the GameObjects, nothing happens. I make my objects triggers to see if that works but then the player goes right through them. Does the player need a script as well?