It happens that someone else creates an SSRS scheduled report and you need to edit that schedule.
This is not my code, I got it from here
https://social.technet.microsoft.com/wiki/contents/articles/52177.ssrs-manage-all-report-subscriptions.aspx
I didn't want to take a chance on losing it, it's too valuable to me.
It only ran on the server (without editing) and IE would not work, had to use Chrome.