[ubuntu] how use proxy in axel download accelerator ?

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http://ubuntuforums.org – hi every body :) i am new to ubuntu 12.04 and i'm using "axel" download manager to download files at home . but in university have to set proxy! i edited this file : "axelrc" -> sudo gedit /etc/axelrc at this file , i added "http_proxy = http://usename : pass @ proxy : port/" but when i download a file by axel , it says "authentication proxy ... " what shoud i do !? should i use aria download manager? thanks :-) (Hardware)