BPC conversion file

Hi experts,

I am really newbie for this aspect. really need advice.

we usually using like below in conversion file:

external     internal                                                       formula

*               js:%external%.toString().replace(/\s+/g,"")

in transformation file:

*conversion

ACCOUNT=ConversionFile.xls!ID

is it possible to fetch data from other dimension in ConversionFile.xls ?

cause i have requirement to move data transaction between BPC cube with some logic.

as example,

- source transaction data:

ACCOUNT     CP_REL     ENTITY     INTERCO

no_account     cp1               e1          intc1

no_account     cp2               e2          intc2

- logic process:

CP_REL     ACCOUNT

cp1               a1         

cp2               a2

- destination transaction data:

ACCOUNT     CP_REL     ENTITY     INTERCO

a1                    cp1          e1               intc1

a2                    cp2          e2               intc2

what i want to do is, in account ConversionFile.xls, i want to fetch current data of CP_REL, if(%external%=cp1 then a1; a2)

thank you.