Drill through working Dynamically

Hello,
I have a problem that I will describe.
I have a fact table with rows and each row has a open date, end date and closure date.
I have a dimdate anda there is no relationship between this two tables.
I create a measure selected date: The selected date need to be by defaults the dateinsert-30 days.

selected_date: IF( ISBLANK(SELECTEDVALUE(DimDate[Date])), LASTDATE(F_Table[DateInsert]) - 30, SELECTEDVALUE(DimDate[Date]) )

 The selected date is set up this way if I want to select another date:

I create a measure:

Nt=Calculate(Countrows(F_Table), FILTER(ALL(F_Table),F_Table[opendate] >= F_Table[selected_date]))

 The measure works well, but when I am trying to Drill through to a new page with a table with all records that I found in Nt, the table show all records from the table and not what is suppose to do. 
I am putting the measure on Drill through but it seems that the selected date in not taking in acocunt.

Anyone knows hoe to solve this?