It looks like you are recasting the URL to a String in your service action parameter - is that necessary instead of using URLs throughout?
I almost have this working…I think…but I am getting 403 errors when the service is trying to run. My user should have access to run this service though, so I don’t understand why it’s giving me a 403. Do I have my data model objects setup incorrectly or something, so that the File URL is wrong? I’m using a database connected object’s File Content URL here as shown in the screenshot.
