Trying to Create a Powerup that lasts a certain amount of time

Hello!
I’m new to coding, so please bear with me. I’m trying to create code for a powerup that will double the number of points received when other objects are picked up. Here’s what I have so far:

#pragma strict

var points : int;
var timer: float = 300; // set duration time in seconds in the Inspector

function Update () {

}

function OnTriggerEnter (col){
	timer -= Time.deltaTime;
		if (timer > 0)
    	{
       	OnTriggerEnter(){
       			points += (points * 2);
       	}
	}
}

I do have a points mechanic already set up within my PlayerStatus script and the script for the other pickup. But I keep getting this error:

Error BCE0043: Unexpected token: col. (BCE0043) (Assembly-UnityScript)

I’ve tried replacing “col” with “Collider” and “Collision” and both of them give me this error:

Error BCE0017: The best overload for the method ‘doubleScore.OnTriggerEnter(Object)’ is not compatible with the argument list ‘()’. (BCE0017) (Assembly-UnityScript)

I’m at a loss. Anybody have any advice?

I’m not used to javascript so maybe there are some syntax error, but try:

#pragma strict
 
var points : int;
var timer: float = 300; // set duration time in seconds in the Inspector
 
function Update () {
       if (timer > 0)
        {
           timer -= Time.deltaTime;
     } 
}
 
function OnTriggerEnter (col: Collider){
       if (timer > 0)
        {
           OnTriggerEnter(){
                 points += (points * 2);
        }
    }
}

You will also need to check what hit the collider, as Ant0ny points out