Level delay

using UnityEngine;
using System.Collections;

public class LevelLoad : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {

    }

    void OnCollisionEnter(Collision other)
    {
        if (other.gameObject.tag == "GrabObject")
        {
            Invoke(LoadLevel, 5);
        }
    }

    public void LoadLevel()
    {
        Application.LoadLevel("DroneGame_3");
    }
}