I've been searching for a long time for a way to rename the uploaded file in the callback_after_upload,
but now that i found it I have another problem which, after all my research, I haven't found the way to fix...
After I rename the uploaded file, I want to update the field on the form with the new file name...
Because, else, the old name stays in the field, it gets in the database and then I get lots of problems to get the picture back...
A simple question that creates a lot of brain-heating for me
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Thank you in advance.