How do you make a script that blurs your screen when you press escape?

I'm extremely confused on where to start with this code.

Please help!

(P.S. - the script also unblurs when you exit out of escape!)

You shouldn't use the key escape, The escape button opens up the CoreGui Menu.

But if you want you can check to see if coregui is activated or not.

By using https://developer.roblox.com/api-reference/class/GuiService GuiOpen, and GuiClosed Events