Exclude a dimension in cubevalue formula

[Barto]

Hi,

I need a way to exclude this dimension

"[Employee].[Operations Group Key].[All].[CORPSAP]"

From the below formula

=CUBEVALUE("sqlprodbi Payroll","[Employee].[Centre Key].[All].[GC - Gold Coast]","[Measures].[Mpr Completion Percentage]","[Date].[Month].[All].["&TEXT(G88,"MMM YYYY")&"]")

Thanks