IBController and Autotrading

Hi,
I am using Amibroker with Interactive Broker Data configured with IBController auto trading. The problem i find with data plugin is the 1min backfill limitation. Is there a developer out there who has customised the Back fill interval periods?
My aim is to use 5 min or 1hour backfill intervals to broaden my database capacity, EOD is to coarse for my liking.
regards