Closed aperture behavior with AFN

Hi all

I am facing and issue with closed aperture in my model.
I assigned some aperture as “operable” and “non operable” for the closed ones.
But when i monitored the Node volume flow rate, there were values for all the aperture even for the closed one.
I appears that in the idf file, the opening factor for the operable aperture is the value i specified but for the closed aperture it is 1 instead of 0.

You can see below some extract of the idf file

and the operable fraction specified in the model

How can i change the default value for the closed aperture?

Best regards.

Andy