Set Analysis Less than Date

[shasha3006]

Hi Good People,

want to ask, 

I want to create a set analysis  for results dated less than 12 months from the current date

this Is my script :

registered_date={"$(=Date(addmonths(MonthStart(Max(MakeDate(Year, Month))),-12),'YYYY-MM-DD'))"}

but, this didn't working.

can anyone help?

thanks 

[shasha3006]

dear @vinieme12 ,

i have try, and result below