Conditional statements in NX parts list

[YogeeshRaj]

Anybody know how to give conditional statements in NX (8.5) parts list?

My objective is as beloow
I would like to get the cumulative length of the parts, if they fall under one row item in Parts list. All the necessaryy prameters are flowing from part attributes.

e.g.
Assembly items
1. L-Angle 3x2 ; Stock# 12345 ; Length 8in ; UOM inch
2. L-Angle 3x2 ; Stock# 12345 ; Length 10in ; UOM inch
3. L-Angle 5x3 ; Stock# 12346 ; Length 15in ; UOM inch
4. L-Angle 5x3 ; Stock# 12346 ; Length 20in ; UOM inch
5. Bolt 3/8 x 1.5 ; Stock #12347 ; UOM EA (i.e. each)

Desired output:
QTY - UOM - Description - Stock# - ITEM#
18 - inch - L-Angle 3x2 - 12345 - 1
25 - inch - L-Angle 5x3 - 12346 - 2
1 - EA - Bolt 3/8 x 1.5 - 12347 - 3

Thanks in advance
Yogeesh