I am having trouble making a scratch code for a flashlight. The way it works is that once I shine it on a specific part of a sprite, it brightens up. Can someone make a line of code that will help?

something like this?
https://scratch.mit.edu/projects/992970492/
i know it's not the best but i tried my best

I have a big sprite though but kind of accurate

But also for the background

Here is a very complicated one if you are interested: Multiple light sources that is scalable to different intensity and size: https://scratch.mit.edu/projects/965185923/

so basically I made mine by putting a cat or something on the project, making a circle that looks like the light from the flashlight and putting it on the layer that is under the cat, making another sprite that is the darkness by doing this; copy/pasting the light from the flashlight sprite, turning to bitmap, fill the rest of the sprite that isn't the light with black, switch fill color to clear, fill the light part in the middle with the clear color, and putting that new black layer above everything else, then I just put both of those sprites (not cat) to follow the mouse.
sorry for incomprehensive explanation lol