I'm using salesforce as an identity provider through a connected app link in my community. The service provider is a .NET application that downloads a lot of files. I've got the .NET application working with Salesforce as the identity provider using the sustainsys SAML2 library. Now I want to I'm trying to pass URL variables through the connected app, but nothing shows up in the service provider. The custom identity variables pass through on the identity object just fine.
thisVar and otherVar are blank and the service provider URL is only
What do I need to do to pass through URL variables using a connected app like this?