I am testing out interacting with a file conversion api. I return the completed file conversions as urls. I want to do some magic that pulls in the data from the urls and then converts it into a base64 url so that I can do other things with it. I am having great difficulty figuring out how to get the data at the end of the urls into retool. It seems I can place it into an image component or I can open the urls and the file will download but I can't get it into retool as a variable or something.