Camera Offset...?

I am new to Java script and have a quick question that I hope someone in the Unity community can help with. I would like to offset my camera in the z axis a specific amount. Not sure how to make this happen. Any help would be greatly appreciated. Thank you.

This is what I have…

#pragma strict

var target : Transform;
var smoothTime = 0.3;
private var thisTransform : Transform;
private var velocity : Vector3;

function Start()
	thisTransform = transform;

function Update() 
	thisTransform.position.x = Mathf.SmoothDamp( thisTransform.position.x, 
		target.position.x, velocity.x, smoothTime);
	thisTransform.position.z = Mathf.SmoothDamp( thisTransform.position.z, 
		target.position.z, velocity.z, smoothTime);

var offsetAmount : float = 10.00;

thisTransform.position.z = Mathf.SmoothDamp(thistransform.position.z,target.position.z+offsetAmount,velocity.z,smoothTime);

Thank you, Thank you, Thank you! This works great!