Scope using MeasureGroupMeasures() and Hierarchy level

Trying to evaluate all levels rather than a specific level. Is this possible? The example below is not working for me.Basically, when level > 1, we want all measures in the measure group to be set to null else display the measures. SCOPE(MeasureGroupMeasures("Marketing Cost"),[Enrollment Device].[Enrollment Device Hierarchy].AllMembers ); This = IIF( [Enrollment Device].[Enrollment Device Hierarchy].currentmember.level.ordinal < 2 ,MeasureGroupMeasures("Marketing Cost") ,NULL ); END SCOPE;