What is an intendent way of using SQCM and other units calulated from it

[Maxim-CADman77]

Each standard Vault initially contains  21 Units which are calculated from 5 Base units.

(see Units of Measure table Tools>Administration>Items>Configure Units).

Those 5 are:

1. cm

2. ea

3. g

4. ml

5. sqcm

It is not problem to get base unit № 1,2,3 and 4 in new Item (question of correct base unit set in primary Inventor file).

I'd like to know what should be done in order "sqcm" be set as unit of new Item assigned to IPT file?

Semms no way or I'm mistaken?

AFAIK "Only parameters that have a value that are units of length, volume, or mass are valid."
Source - http://augi.typepad.com/augi_news/files/iv10_bom_whitepaper.pdf