Thank you so much for your answer @mitchbaylis .
I understand that you return an URL. But to get the url, you need to store the file somewhere. How do you do this?
I can see that things have been changed from how this was done before.
I have the data that i want to add to a file, and return as file. (Or upload, and return URL, if thats the thing to do)
I will check out o1. Thanks. 