over months from the date

[#1]

Hi The community,

I don't understand mistake.

I want to create a graphiq with this expression :

= COUNT({$<Date={">=$(=MonthStart(AddMonths(Max(MoisDateCreationOT),-12)))"}*{"<$(=MonthEnd(Max(MoisDateCreationOT)))"}>}ID_OT)))

but screen displays anything

I want to display ID_OT by month (MoisDateCreationOT) and more precisely over 12 months from the date

How can I do?

Thanks a lot