GET 1 parent member

Hi expert,

in my script:

*XDim_Memberset Product = <ALL>

This will scan all of my children product only when i use WHEN/ENDWHEN...

but now i want include 1 parent member call : PD_SHEET only one !!

I dunt want use: *CALC_DUMMY_ORG Product=PARENTH1

because this will make my system scan all the parent member ..and i have 100++ parent member..

is there any idea??