Basically i have .
<tbody>
(Customer)
(10
20
25
40 )
(F
M)
(S)
</tbody>
under customer are different sorts, now i want to somehow get a sum from only one of 10,20,25,40 and then based on f m or s a conditional answer?
like its customer bob had a 1 10 is F or M and 1 or 2 S
not sure what...