Finally, I ended out with the following expression:

WITH  MEMBER [DateOfSale].[LastDayOfMonthRevenue] AS 'AGGREGATE([DateOfSale].[Actual].[MonthSold].CurrentMember.LASTCHILD,MEASURES.[Amount Sold ])

So if you looking to get the value for measure other than you have in context AGGREGATE would be helpful.

This approach is very useful e.g. if you want to show daily running total but for the monthly scope.

Thanks [@Alessandro Marin] for an extra DeepSee support session on GLobal Summit 17 Tech Exchange ;)

If I don't have control of this, who decides what is relevant?

Hi, Mike!

iKnow technology decides. iKnow analyses the article compares with all the rest articles in Community and makes the decision according to its algorithms and some settings and blacklists.  Actually, it's in beta state at the moment and sometimes it does irrelevant decisions. iKnow thinks that How to highlight Caché ObjectScript, work with htm, add image in the post and other questions article is relevant to your question at least by 30%. 

We would fix the algorithm in next DC version.

Hi, Mike!

It's a good question, so I vote for your question too.

Here is the short explanation.

I guess everyone in DC would love to see qualitative articles, questions, and answers.

Voting is the way for us to introduce mechanism on DC which would encourage the creation of qualitative content and discourage the low-quality staff. And "Rating" is the sum of votes.

It's also the way for an OP to know how many people said "Thank you for your post and hard work" for his article. We can see articles with more than 10 "thank you for your post" signs.

It's the way to "Agree" and "I like it" for the answers and comments.

Also, sometimes Votes is the way to say "I disagree" and "I don't like it" and yes, it can be confusing to distinguish when you "disagree" or "dislike".

It's not an ideal mechanism, maybe we would introduce something better, need your advice here.

Hi, Mike!

It's a good question.

Now Groups are tags, which we want to be in any post. Every Group tag relates either to InterSystems Product (CachéEnsembleHealthShare),  or InterSystems Technology (DeepSeeIKnow) or InterSystems Service (Learning ServicesWorldwide Response Center (WRC)). 

All the rest valuable things are tags. HTH.