A copy and paste of this, with no question, and not enough details. I've lost count of the number of times you've been asked to read PerlMonks for the Absolute Beginner/How do I post a question effectively?, over the years you've not made any more effort in trying to get help here.
Update: I don't think you have read the CGI documentation on uploads which explains a few things, your problem becomes pretty clear if you actually read and understand the documentation and the code you copied. There are also dozens of threads here on this topic, Super Search.
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