Question Should this work like I am expecting?

Hello, I have a simple script on an enemy that when clicked turns the colour to a different colour and changes the tag. But for some reason, it barely works and is almost impossible to use, as weather or not it does what I want it to do seems to depend on the engines mood.. heres the code.

Code (csharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Hurtful : MonoBehaviour
6. {
7.     public Color newColour;
8.     public SpriteRenderer rend;
9.  
10.    
11.     private void OnMouseEnter()
12.     {
13.         if (Input.GetMouseButtonDown(0))
14.         {
15.             // No more die, and now green.
16.             gameObject.tag = "Safe";
17.             rend.color = newColour;
18.         }
19.     }
20. }

 

Ohhhhhhhhhh I see my issue lol. I let the autofill fill it and I didnt pay attention, I should probably not be coding while tired. thanks.