Aggregation for certain members under Parent

@Idescendants

Hi

I have a parent having several members as children say 25. and I would like to aggregate only say 20 members to Parent.

Can I do it in business rule without hard coding members.

normally we use @Idescendants () function for aggregation.

is there way around to achieve this.

script is

FIX ("Budget", &CurrYr, "Local", "Draft")

   

    @DESCENDANTS("Entity");

    @IDESCENDANTS("All CostCenters");

   

    @REMOVE(@IDESCENDANTS("All Intakes"), "No Intake");

    @IDESCENDANTS("Yeartotal");

ENDFIX

its not validating

Thanks