Time measure

[Anonymous]

Trying to get a measure that will sum sales for the month to day.  So far I have the following expression, but it does not work:

(sum(aggr(sum(distinct{$<[completed_date.autoCalendar.Date]={">=$(=Date(max([completed_date])-30))"}>}(order_total)), order_id))

Instead, I get a rolling thirty day total.  Any idea on how to get this to show Current MTD sales?

Also, probably very similar to that measure, I need to create a measure that will Sum last full week of sales:

(sum(aggr(sum(distinct{$<[completed_date.autoCalendar.Date]={"$(=Date(max([completed_date])-7))"}>}(order_total)), order_id))

not really working either.  Any help is appreciated.  Thanks in advance.