[Zope] File upload - form doesn't empty the "file" field

[Gitte Wange]

Hello,

I know this might be a HTML question but I'm not very experienced in file 
uploads. So please bear with me.

I have created a form which - among other - uploads a file to the filesystem. 
That works.
But when I go back to the upload page, updates some attributes and submit the 
data, the data that comes back contains the file that I uploaded the last 
time.
The file attribute of the request isn't being emty. Do I have to set VALUE="" 
at the input field ???

Anyone with a good idea ?

Regards,