MUX, API and bubble for upload video file

Hi everyone,

I’m trying to use MUX as video service provider. I need to upload a video from a page of my Bubble app, and to be able to use it as VOD content.

From the MUX back-office, I’ve found this page and when I click on the “Run request”, my web browser asks for a file, and then the upload start, perfect because it’s my need.

So I use the API connector to set everything, base on a Curl from the MUX documentation. It looks like it’s working, because I don’t have an error, and I receive the API Returned Value. But when I use a button to start this workflow, nothing append, my web browser donc ask my for a file.

Here is my conf :

What can I do to solve this issue ?

Many thanks,
Clem