Default selection Extension in Qlik sense

[joshibabu_are]

Hi Guru's,

I Have Year,Quarter,Month,YearMonth  are the Filter Objects in qlik sense Application

I want to use On open Trigger using Extension to Current "YearMonth" Minus 1      i.e 2018-feb 

What expression do i need to write in Extension to achieve this.

stalwar1‌

Thanks,

Joshi

[Chanty4u]

try this

=MonthName(Today(),-1)

[joshibabu_are]

Hi Chanty,

=MonthName(Today(),-1) returning 2/1/2018 But my Year Month Field format is 2018-Jan,2018_feb ......

How to achieve the same

[bertdijks]

What about:

=max({<LastMonthFlag={'1'}>}YearMonth)