I'm trying to create a segment of inactive subscribers... subscribers who haven't opened any campaigns in the last 30 days (so I can easily identify them and send some "last chance" messages to them before excluding them from future mailings).
I have created a custom tag for "number of opens" and assigned an integer of 10 for every time they open an email.
Now I need to create the segment, but I'm not sure I'm doing it correctly. This image shows what I have done (please tell me if I need to make any changes):

I have created a custom tag for "number of opens" and assigned an integer of 10 for every time they open an email.
Now I need to create the segment, but I'm not sure I'm doing it correctly. This image shows what I have done (please tell me if I need to make any changes):
