Carpet Bombing value

Im try to addapt Chris Rosenmann's Boeing B-29 so i can use it for carpet bombing raids in CFS3.
But i have a small glitch in the B-29.XML Data Pack (see below) the "... Quantity="3" ..." value make less than no sense, i must be missing some thing !!!
As this value does not look like the "number of bombs", weight in "lbs" or "Kgs" does anyone Know where this value is from
Nrev
But i have a small glitch in the B-29.XML Data Pack (see below) the "... Quantity="3" ..." value make less than no sense, i must be missing some thing !!!
As this value does not look like the "number of bombs", weight in "lbs" or "Kgs" does anyone Know where this value is from

Nrev