Unwanted data remove from RSS feed

I have remove unwanted data ex. author name,publish date etc. so how to modify site_config/custom/global.txt file.where to put code.I had try to strip the unwanted data using global.txt file but it is not working. So please how to implement code for this one.
Thank you for your help.

Hi Dilip, anything you add to site_config/custom/global.txt should get applied to all sites processed by Full-Text RSS (unless there’s a site config file specifically for the site in question with autodetect_on_failure: no)

If it’s not working, please give us an example of what you’re doing: URL of the page you’re processing, contents of your global.txt file, and a brief explanation of what’s not working.