In Game Variable not Workin' ...

[general656]

I just want when I push "F" the flashlight to turn on ONLY if I have 5 points . And when I push "O" to gain Points so I can use the flashlight . But if I try the "int points = 0 " to make it "static int points = 0" it doesn't work . It sends me an error "Unexpected Symbol 'static' . In this code I put the 'static' in brackets just to remind you I have used it without and with it in this code .

using UnityEngine;
using System.Collections;

public class flashing : MonoBehaviour
{
    void Update()
    {
        (static) int points = 0;
        
        if (Input.GetKeyDown(KeyCode.O))
            points++;
            
        if (Input.GetKeyDown(KeyCode.F) && points == 5)
        {
            points = 0;
            light.enabled = !light.enabled;
        }
    }
}