Show dimension values in a chart based a condition

[#1]

Hi folks,

I have this chart that shows the evolution (by month) of evaluation (good, regular, bad) of projects. I have 32 projects but I only want to show values for a specific month if all the 32 projects have the evaluation.

Ex:

October - 32 projects evaluated

November - 32 projects evaluated

December - 10 projects evaluated

In my chart will be shown only October and November.

I tried using some aggregation in the Date dimension like this below, but didn't work.

=if(aggr(count(dat_evaluation_project),month_evaluation_project)=32 , date(dat_evaluation_project,'MMM/YY'))

Any ideas?

Thanks in advance.