Doubts analytics

Hello :

I have several doubts with the analytical tools of unity . They are:

1-I want to record the number of times players pressed a button. To do this, I create the event :

Analytics.CustomEvent ("Pulsado camisetas", new Dictionary { { "Veces pulsado camisetas", +1 } });

I can see the data event, like you can see in this image: Therefore , I want to register these event data in a segment. Yesterday I made this segment with the event created , but nothing happens.

Is this the way how data events are registered in the segments ? Is this the way to use events and segments ?

2-In the manual unity of unity - analytics - user attributes , you say that can be registered gender and age. How I can get the age and gender of the user without using questionnaires ?

Thank you, and please help me