My 2d tractor beam is not working

So I have two scripts, one for the ship and one for the object I want to move:

 using UnityEngine;
 using System.Collections;
 
 public class TractorBeamShip : MonoBehaviour {
 
     // Use this for initialization
     void Start () {
     
     }
     
     internal string ObjName;
     
     int range = 1;
     
     GameObject target;
     
     public Color c1 = Color.cyan;
     
     public Color c2 = new Color(1, 1, 1, 0);
     
     void OnMouseDrag(){
         
         //Find the object named after the "ObjName" variable...
         target = GameObject.Find(ObjName);
         
         //Add a line renderer...
         LineRenderer line = gameObject.AddComponent<LineRenderer>();
         
         //Set it's vertex count to 2...
         line.SetVertexCount(2);
         
         //Don't use world space...
         line.useWorldSpace = false;
         
         //Give it a new Material...
         line.material = new Material(Shader.Find("Particles/Additive"));
         
         //Set the colors...
         line.SetColors(c1, c2);
         
         //Set positions to target's position.
         line.SetPosition(range , target.transform.position);
     }
     void OnMouseUp (){
         //Get this object's line renderer...
         LineRenderer line = gameObject.GetComponent<LineRenderer>();
         
         //And destroy it.
         Destroy(line);
     }
     
     // Update is called once per frame
     void Update() {
         if (Input.GetButtonDown("Jump")){
             print (ObjName);//DUH
         }
     }
 }/*IT STILL DOESN'T WORK!!!!*/

and

 using UnityEngine;
 using System.Collections;
 
 public class TractorBeamScript : MonoBehaviour {
 
     // Use this for initialization
     void Start () {
     
     }
     
     public TractorBeamShip Ship;
     
     public float range;
     
     public float TractorSpeed;
     
     void OnMouseDrag(/*Empty*/) {
         
         //Get the "ObjName" variable from "Ship" & set it to this object's name...
         Ship.ObjName = name;
         
         //Do some complicated calculations & find "Ship"'s position...
         Vector2 diff = Ship.transform.position - transform.position;
         
         //normalize diff...
         diff.Normalize();
         
         //get the angle to "Ship"...
         float rot_z = Mathf.Atan2(diff.y, diff.x) * Mathf.Rad2Deg;
         
         //& finaly, Add force towards "Ship"'s position.
         rigidbody2D.AddForce(diff * 1 * TractorSpeed);
     }
     
     // Update is called once per frame
     void Update () {
     //Empty
     }
 }
 /*THIS WORKS FINE*/

The problem is that I cannot seem to be able to make the "beam" part of it, the tractor part works just fine.