jungle swing type game ...?

Hi All, I am doing a simulation i.e of type jungle swing. I used hinge joints for the rope creation and top part is there to hold the rope. Below I attached both web player and code. I am about to do a jungle swing(Iphone application) type of thing. I am unable to instantiate the rope and all for the next position.Go through the thing which I did, and help me to complete it. please forward me to complete it. Thanx in advance...

 using UnityEngine;
 using System.Collections;
 
 public class hingeCreation : MonoBehaviour {
 
     public GameObject sphere,cylinder;//sphere is for representation of the boy to swing, cylinder is for rope
     bool flag =true;
     public float x,y,z;// for initial rotation of the rope
 
     Vector3 scale;//for creating certain length rope
     public static bool stopScale;
 
     // Use this for initialization
     void Start () {
         //x=270.0f;
         //y=0.0f;
         //z=0.0f;
     }
     
     // Update is called once per frame
     void Update () {
 
         if(Input.GetMouseButtonDown(0)){
 
             Destroy(this.gameObject.hingeJoint); // to be implemented for inactivating rope for a while and creaing at a new position
             this.gameObject.SetActive(false);
 
             //Destroy(this.gameObject.transform.parent);
         }
 
         if(!stopScale){
             scale = cylinder.transform.localScale;
             scale.y += 0.09f;
             cylinder.transform.localScale = scale;
             
     }
     }
     void OnCollisionEnter(Collision col){
         stopScale = true;
         print(col.gameObject.name);
 
 
 
         if(col.gameObject.name == "collider" && flag == true){
             HingeJoint sphere = this.gameObject.AddComponent("HingeJoint") as HingeJoint; // creating the joint at the collision point
             this.gameObject.hingeJoint.breakForce = 100000000.0f;
             this.gameObject.hingeJoint.breakTorque = 1000000.0f;
             StartCoroutine("create",0.1f);
 
             flag = false;
         }
         
     }
     IEnumerator create(float t){
         yield return new WaitForSeconds(t);
         this.gameObject.rigidbody.useGravity = true;
         //this script is attached to rope(cylinder) firstly it will have no grvity, rope has a hinge we have to use grvity
 
         sphere.gameObject.GetComponent<FixedJoint>().connectedBody = this.gameObject.rigidbody;
         this.transform.parent.parent.gameObject.transform.eulerAngles = new Vector3(x,y,z);
         Invoke("Created",1.0f);
     }
     void Created(){
         sphere.gameObject.GetComponent<FixedJoint>().tag = "Infinity";// bob and rope will connect together 
         sphere.gameObject.GetComponent<FixedJoint>().tag = "Infinity";
         sphere.gameObject.rigidbody.useGravity = true;
 
     }
 }