chart sort issue---
you want to sort a chart x , and create a new item for sort purpose , like 'minimum([Presentation Layer].[Alt7].[COL_27] for [week of year])', so different period has the same minimum week data , you can sort by it, however you have to set the aggragation property to None for both of them.
_week_of_year (
cast([Presentation Layer].[Alternative7].[COLUMN_27] as date)
)
2:-- one parameter can be used by multiple value prompt.
so you give user the ability to multiple select measures from different locations