SSAS- Dimension Attribute needs to be sorted

In one of my SSAS- cube one attribute(inset_date) which is Date datatype and format is yyyy-mm-dd, when I checked in excel pivots it is not coming in order. I have changed the order by property from name to key but it is not sorted, Key -- insert_date(date) Name -- insert_date(wchar) Value-- insert_date(date) Can you please what other properties I have to change to sort the attribute of a dimension?