Trying to use Regex to replace anything after a keyword
This plugin is a life saver! (especially using regex "^.*$" to replace anything!) 

As a designer, I'm not very good at Regex and I've been working with a dev who is, and we can get the following regex to work on https://regex101.com/  **but not in this plugin**: 

(?<=KEYWORD).*$

example string: "select anything after this KEYWORD so that it can be replaced" 

I am trying to replace any text that comes after a given keyword.