Point in time using as dimension?

[yipchunyu]

I created a master calendar and setup some variable which prepared for using point in time reporting 
PeriodID = {$(=Max(PeriodID) – 12)}, Year = , Quarter = , Month = , Period =
QuarterID = {$(=Max(QuarterID) – 4)}, Year = , Quarter = , Month = , Period =

It works when I use it in measure, like below:

=Sum(${<=$(vSetPreviousQuarter)>} [SALES_USD])

However, I want to use the variable in chart as dimension.

In other words, is it possible to make 

Current YTD vs LY YTD in the x-axis of a bar chart?

[Taoufiq_Zarra]

you can fill nothing in dimension and leave the expressions with these values!

if not the expressions in dimension without aggr , I don't see very well

[yipchunyu]

sorry, so how can i create a dimension 

Current YTD vs LY YTD?

[Taoufiq_Zarra]

can you share a sample data ?