How to set up Google Analytics goals for Android app?

Question

Google

Hello! We need to fasten the analytics so that when the user clicks on the button (phone call button), an event is sent to Google Ananlytics. When the button is clicked, I execute the following code:

HitBuilders.EventBuilder eventBuilder = new HitBuilders.EventBuilder("Phone number", "call");
MyApp.getTracker().send(eventBuilder.build());

The goal is set in the analytics: The

widget is also set for this goal:

But the chart shows a straight line, and does not react to events in any way. BUT! If you go to the tab In real time - Events - there are events. In general, the task is to display a graph with the number of events per day. Perhaps, for this, it is not at all that "goals" should be used?