Pass the desired length of short code in API call

Hi,

This is more of a feature request. 
The default length of short code that is generated is 5 characters.
Ideally, if I am calling the API to generate the shortcode for a URL, there should be a optional parameter where I may pass a numeric value (greater than 5) so that a short code of desired length can be generated.
Same can be provided in the browser based interface also.

Thanks