Datatype Currency

Hi,

I am trying to understand the datatype currency, becoz I am trying to create a flat file for BDC in which one feild is WRBTR... If i see its length in BSEG table it says length 13 & decimal 2 ...

I want to understand how many places I should keep in my flat file...

1.) Since length is 13 and 2 decimals, so 11.2 (11 places before decimal & two places after..total length is 13 now)

2.) 10.2 (10 places before decimal, 1 place for decimal & 2 places after decimal).

3.) 13.2 (13 places before decimal, one place for decimal & 2 places after decimal.. so now the total length is 16)

Please Help.

Thank You,

SB.