Making a 3D UI Jumpscare with still image

Hello, so I am making a scary game right now and what I want to do is when you come to contact with a game object (enemy), it enables via script a jumpscare image in the UI. However, I dont know how to go about this. I already tried this `using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CC3D : MonoBehaviour

void OnCollisionEnter(Collision Col)
    if ( == "MainPlayer")
        Enable( == "ScareUIPanel") ;

but it didnt seem to work, im getting this error : Assets\CC#D.cs(12,13): error CS0103: The name ‘Enable’ does not exist in the current context

I know almost nothing about code so please dont yell at me haha, thanks in advanced!

Enabling / disabling objects:

Collision detection:

Collision detection with trigger: