[web2py] ajax and FieldStorage

[leone]

Hi all,
I am using ubuntu and chrome.
When I pass as ajax param the vale of a input['file'] tag I obtain not
a FieldStorage object in request.vars.filepath, but the string C:
\fakepath\websys.py that isn't the real directory of file!!!!
How can I get Fieldstorage object with filename and file stream?
Thanks in advance.
leone