Object obj = request.getSession().getAttribute("se_files"+ywid);
if (obj != null) {
files_temp = (Files) obj;
}
for (int i = 0; i < files.getCount(); i++) {
File myFile = files.getFile(i);
if (!myFile.isMissing()) {
files_temp.addFile(myFile);
}
}
request.getSession().setAttribute("se_files"+ywid, files_temp);
response.sendRedirect(url);