Cube view using complex function Account

You can write an XFBR Rule

Within that rule you can pull all the members in a list using this code

Dim Accounts As List(Of String) = BRApi.Finance.Metadata.GetMembersUsingFilter(si, "DimensionName","A#INCOME_STATEMENT.Base.Where(Text1 Startswith On-Campus)",True).Select(Function(c) c.Member.Name).ToList

This will pull aur your relevant accounts in a list then you can loop over that list create an empty string and append all you accounts in this format A#Account1 + A#Account2 and sooo on 

then add that to the getdatacell and return in your cube view