Numerical comparison support for column value - cell

I've gotten the following data set:

rowkey1 test:duration =43425
rowkey2 test:duration = 5000
rowkey3 test:duration = 90
rowkey4 test:duration =8882

According to your filter languages, if i want the data in a specific duration range,e.g. 2000<duration<10000. I should compose the scanner specifications like this:

{FILTER => "SingleColumnValueFilter('test', 'duration', <=, 'binary:10000') AND SingleColumnValueFilter('test', 'duration', >=, 'binary:2000')"}

Finally got nothing, since i foud out that the comparator i used is BinaryComparator which compares by bits i.e, `90` is greater than `800`, a little incredible.

Currently i am unable to follow your spectacular project. I have read your source code of the BinaryComparator, it's really vague for newbie in java.
Could you please add support for numerical comparison or give me some advice to conform my needs.