Editing the form wizard associated with the carousel

[GeraintR]

I've spent a loooooong time trying to update a csv file from a form-enabled carousel. In spite of the tip about editing the csv path via the form properties, the Advanced properties path box at the end of the wizard seems uneditable, and only generates a relative path. I seem to need an absolute path, and eventually, I edited the php file on the web server to change the relative path generated by the wizard to the absolute path, and presto, it works. Have I missed some obvious way of editing the path through WYSIWYG?

[Pablo]

There is no need to manually edit the code.
The path to csv should be relative to the page were the form is on.

This is from the help:

After using the wizard make sure the path to the file is correct. if you have created the csv file in a sub folder on the server then WYSIWYG Web Builder may not be able to determine the correct folder automatically.