Small adjustment of WP plugin

I have a custom Wordpress plugin that work together with Formidable PRO WP plugin. The task is to make a small adjustment to my custom plugin. Now it can create WP category automatically if certain settings are set. I want it to: - Add this category name to a text file of search keywords (located in certain directory on server). Also, the search box on the top of the site should load this list of keywords in search suggestions (there is a ready auto-suggestion plugin, I will show you it's location, it should just be tied to the specific search form of WP). URGENT! Must be ready today.