Conervting 0FISCPER to a keyfigure

Hi,

how to find out the max 0FISCPER of a Order in BEX by 
the right setting of a replacemant path variable ?

How to convert the charcteristic 0FISPER correctly to a keyfigure

( http://scn.sap.com/docs/DOC-27491 ) ?

For Example - in goes the ORDER TABLE with the follwong data:

ORDERNO        FISCPER     PRICE

----------------------------------------------------

M1                  001.2014     11,11

M1                  005.2014     22.22

M1                  012.2014     33.33

A1                  010.2015     11,11

A1                  005.2015     22.22

A1                  001.2015     33.33

Out should go the desired result of the BEX Query:

M1                  012.2014

A1                  010.2015

I need to convert the 0FISCPER ( 007.2014) to a keyfigure, than find the max of it.
Problem is -i guess - the formatting of the 0FISCPER which is in the mmm.yyyy notation.

What settings will fit for the necessary replacemant path variable ?

Pretty easy basically in SQL - but how in BEX :

SELECT ORDERNO, MAX( 0FSICPER) FROM ORDER_TABLE

GROUP BY ORDERNO.

ThanXs

Martin