What is the problem with the forward motion in this script?

I have created a code that uses Leap Motion to walk forward and backward using swipe hand gestures. Now the backward motion works fine, but the forward motion does not. I thought the problem was with the Leap Motion Controller itself and I have tried to replace them with each other and even tried the other hand. The problem is with the script I wrote.

using UnityEngine; using System.Collections; using Leap;

public class Newsedf : MonoBehaviour { Controller controller; public bool moveBack; public bool moveFront; public float movementSpeed= 20.0f; float verticalVelocity= 0; public float forwardSpeed=10; float sideSpeed=0;

 void Start () {
     controller = new Controller ();
     controller.EnableGesture (Gesture.GestureType.TYPESWIPE);
     controller.Config.SetFloat ("Gesture.Swipe.MiniLength", 200.0f);
     controller.Config.SetFloat ("Gesture.Swipe.MiniVelocity", 750f);
     controller.Config.Save ();
 }
 void Update () {
     CharacterController cc = GetComponent<CharacterController> ();
     Frame frame = controller.Frame ();
     GestureList gestures = frame.Gestures ();
     Hand hand = frame.Hands.Frontmost;

     
     if (hand.IsLeft) {
         for (int i=0; i<gestures.Count; i++) {
             Gesture gesture = gestures [i];
             if (gesture.Type == Gesture.GestureType.TYPESWIPE) {
                 SwipeGesture Swipe = new SwipeGesture (gesture);
                 Vector swipeDirection = Swipe.Direction;
                 if (swipeDirection.x < 0) {
                     Debug.Log ("Left Left");
                     moveFront = true;
                     moveBack = false;
                     } else if (swipeDirection.x > 0) {
                     Debug.Log ("Left Right");
                     moveBack = true;
                     moveFront = false;
                       }
                     }
                    }
         if(moveFront == true) {
             //moveBack= false;
             float forwardSpeed= 5;
             Vector3 speed= new Vector3( sideSpeed, verticalVelocity, forwardSpeed);
             speed = transform.rotation * speed;
             cc.Move (speed* Time.deltaTime);
         }else if(moveBack == true) {
             //moveFront= false;
             float forwardSpeed= 5;
             Vector3 speed= new Vector3( sideSpeed, verticalVelocity, forwardSpeed);
             speed = transform.rotation * speed*-1;
             //speed= transform.forward;
             //speed= speed* forwardSpeed;
             cc.Move (speed* Time.deltaTime);
         }else{
             moveFront= false;
             moveBack= false;
             float forwardSpeed=0;
             Vector3 speed= new Vector3( sideSpeed, verticalVelocity, forwardSpeed);
             speed = transform.rotation * speed;
             cc.Move (speed* Time.deltaTime);
         }
     }

} }