SCOPE()
   IF условие от [Measure].CurrentMember THEN
      THIS=value
   END IF;
   IF [Measure].CurrentMember=value THEN
      FORMAT_STRING(THIS)='hh:mm:ss'
   END IF;
END SCOPE;

SCOPE()
   IF условие от [Measure].CurrentMember THEN
      THIS=value
   END IF;
END SCOPE;

SCOPE()
   IF [Measure].CurrentMember=value THEN
      FORMAT_STRING(THIS)='hh:mm:ss'
   END IF;
END SCOPE;

[Measure].CurrentMember>=1

IF not условие THEN
    THIS=null
END IF;
IF условие THEN
    THIS=value
END IF;

    THIS=IIF(условие,value,null)

CREATE MEMBER Delta = ...,
   FORMAT_STRING = '"' + cstr(int(Delta)) + ' days" hh:mm:ss'

CREATE MEMBER Delta = ...,
   FORMAT_STRING = IIF(Delta < 1, 'hh:mm:ss', '"' + cstr(int(Delta)) + ' days" hh:mm:ss')

SCOPE ({[Measures].[M1], [Measures].[M2], [Measures].[M3], ..., [Measures].[MN]});
  FORMAT_STRING(THIS) = IIF(Measures.CurrentMember < 1, 'hh:mm:ss', '"' + cstr(int(Measures.CurrentMember)) + ' days" hh:mm:ss');
END SCOPE;