Save this to your custom actions folder.

The action requires a 2d light (this won't work with 3d lights). To learn more about Unity's new 2d lighting system, see here:

You also must provide a float to set the intensity. You can set the intensity to 0 to turn the light off.

This script can probably be extended to cover adjusting all the options in a 2d light.

NOTE: When copying the script, it's essential you copy the following line:

using UnityEngine.Experimental.Rendering.Universal;

using UnityEngine;

using System;

using UnityEngine.Experimental.Rendering.Universal;


using UnityEditor;

   /* By Meffy1122
   * Custom action to
* Change 2d light intensity.
   namespace AC
    public class ChangeLightIntensity: Action

           // Declare variables here

        public float intensity;

        public Light2D light;
        public float intensityField;

        public ChangeLightIntensity()
               this.isDisplayed = true;
            category = ActionCategory.Custom;
            title = "Change light intensity";
            description = "Changes light intensity";
           override public float Run()
               light.intensity = intensityField;
            return 0f;


        public override void ShowGUI()
             light = (Light2D)EditorGUILayout.ObjectField("Light to affect:", light, typeof(Light2D), true);

         intensityField = (float)EditorGUILayout.FloatField("New light intensity:", intensityField);

   #endif    //end the action
Community content is available under CC-BY-SA unless otherwise noted.