characteristic select box override

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 3
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

I wanted to override the output of a dropdown select box of the characteristic field of a product. But there is no way to override it on the normal way because as far as I can see the select box is created at "com_hikashop/types/characteristic.php".

I want to set the size of the selectbox from 1 to the number of options the selectbox has. How can I do this?

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