Ignore field selection in set expression

[Micki]

Hi guys, i have exp.

(
(
COUNT(DISTINCT
{<[Week Start]={"$(=MAX([Week Start]))"},[State]={'Closed'},WorkItemType={'Bug'}>}
ID)
-
COUNT(DISTINCT
{<[Week Start]={"$(=MIN([Week Start]))"},[State]={'Closed'},WorkItemType={'Bug'}>}
ID)
)
/
COUNT (DISTINCT[Week Start])
)

 And what i want to achieve is to ignore selection when user select field [Week Start], [Week Start]= not working, 

do you have any idea? probably because i use [Week Start] in set analysis ?

[edwin]

can you try it with single quotes instead of double in the set analysis for WeekStart and if weekstart is a date field use date function in min and max  $(=date(max(...))).  i would split these into 3 expressions and see where it is failing to test.  

[Micki · Accepted solution]

Resolve the issue, 

[Week Start=]

was not working because i had calculated dimension date(floor(WeekStart), when i replace WeekStart instead of calc. dimension, that's works like a charm