Active list indicator

Hi, Community
In a tracker program, I want to configure an indicator that calculates the number of patients who use the care given by a health center during the last semester (active list).
In "Edit expression "I put “V{tei_count}”, but I don’t know what to put in “Edit filter”, to calculate the number of the active list in my program for the previous semester.

Thank you for your support.

Hi @elmoujarrade
Please have a look at this docs and try to understand period type:



Hi, @Ulanbek
Thank you for your support, using the document you shared, I was able to solve the problem.