Generate Points from mouse click in c# unity

SinglePoint.cs

using UnityEngine;
using System.Collections;

public class SinglePoint : MonoBehaviour {
	public GameObject circlePointPrefab;
	public GameObject currentLineRenderer;
	public GameObject lineRendererPrefab;
	public Material drawingMaterial;

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
		if(currentLineRenderer==null){
			currentLineRenderer=(GameObject)Instantiate(lineRendererPrefab);

		}


		if (Input.GetMouseButtonDown (0)) {
			Vector3 currentPosition=Camera.main.ScreenToWorldPoint(Input.mousePosition);
			currentPosition.z=-5.0f;
			InstatiateCirclePoint(currentPosition,currentLineRenderer.transform);
		
		}

	}

	private void InstatiateCirclePoint(Vector3 pos,Transform parent){
		GameObject currentCircle=(GameObject)Instantiate(circlePointPrefab);
		currentCircle.transform.parent = parent;
		currentCircle.GetComponent<Renderer> ().material = drawingMaterial;
		currentCircle.transform.position = pos;

	}


}