Need help coding a powerup script

So I'm trying to make a powerup that when picked up changes the sprite for the weapon currently being used to the new weapon/powerup

I currently have this for my powerup script -
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Microsoft.Unity.VisualStudio;

public class PowerUp : MonoBehaviour
{
public GameObject pickupEffect;
//public class PowerUpEffect Ability;
void OnTriggerEnter2D (Collider2D other)
{
if (other.CompareTag("Player"))
{
Pickup(other);
}
}

public void Pickup(Collider2D player)
{
Instantiate(pickupEffect, transform.position, transform.rotation);

//PowerAbility();

Destroy(gameObject);
}

public void PowerAbility(Collider2D other)
{
if (other.CompareTag("Player"))
{

}
}

}

 

Please use code tags: https://forum.unity.com/threads/using-code-tags-properly.143875/

What exactly is the question/issue?

 

So I'm trying to make a powerup, so when picked up changes the weapon currently being used to the new weapon/powerup but don't know how to code that

 

Before you learn how to code that, please learn how to tag code:

If you post a code snippet, ALWAYS USE CODE TAGS:

How to use code tags: https://forum.unity.com/threads/using-code-tags-properly.143875/

How to report your problem productively in the Unity3D forums:

http://plbm.com/?p=220

How to understand compiler and other errors and even fix them yourself:

https://forum.unity.com/threads/ass...3-syntax-error-expected.1039702/#post-6730855

You might have a lot of luck with googling for this:

 

alright thanks I will try that