Verifying SSO Login Webcheck

This is my first time creating any kind of web check, so I’m not exactly sure what you’re asking. I have tried adding the step url and then checked the follow redirect box and have tried adding the redirect url as a separate step in the webcheck. In both of those configurations I checked the authentication required and entered credentials of a domain account that has access. Those steps are successful but I’ve been told to actually verify login worked I need to add something that appears on the homepage after a successful login in the response field. It’s after I configure that step that it fails.