I cant track App Insights Events

Im currently working on a plugin for azure media player to track events like when a user starts to play a video and some stuff like that. But first of all, my events arent being tracked. I reduced the problem to the minimun and i put this in a javascript file : window.appInsights.trackEvent("test",{ name: "TEST" });

this code is being executed, and the variable window.appInsights is correct too,i mean, its not undefined, but i dont see this event in the custom events section of app insights in azure (in the logs, of course). Im pretty lost, hope u can help. thx in advance!