[Solved] How do i make a roblox plugin undo if i click the plugin for the 2nd time?

Hey there! I am making a plugin that gives you a thumbnailcamera. Its spawns a Sqaure GUI when ur clicking it at the topbar plugins section but i do not know how to remove it if i click it for the second time. Does anyone know it? I've read https://developer.roblox.com/en-us/articles/Intro-to-Plugins but it didnt seems to get my answer there.

Script (Do not steal please!)

solved

Thank you!

The problem is fixed. I added values and i tried to delete an empty screen GUI while its parent is CoreGui