My AI path problem

Beginner Questions
1

I’m using Unity in its 2D setup. When I use my code, I have my gameobject move, but it is translating to the last node before reaching the first node. is there a way to call the previous waypoint?

`using UnityEngine;
using System.Collections;
using Pathfinding;

public class AIpathmatt : MonoBehaviour {
public Transform target;
Seeker seeker;
Path path;
int currentWaypoint;
public float speed;
CharacterController characterController;

// Use this for initialization
void Start () {
	seeker = GetComponent<Seeker> ();
	seeker.StartPath (transform.position, target.position, OnPathComplete );
	characterController = GetComponent<CharacterController> ();


}


public void OnPathComplete ( Path p) {
	if (!p.error) {
				path = p;
					currentWaypoint = 0;
			}
	else {
		Debug.Log (p.error);

}

}
void Update(){
if (path == null) {
return;
}
if (currentWaypoint >= path.vectorPath.Count) {
return;
}
Vector2 direction = (path.vectorPath [currentWaypoint] - transform.position).normalizedspeedTime.deltaTime;

	transform.Translate (direction);

	if (Vector2.Distance (transform.position, path.vectorPath[currentWaypoint])< 2){
		currentWaypoint++;
	}

}
}
`