this.tab.select(2);

FCMPlugin.onNotification(function(data){
    if(data.wasTapped){
      //Notification was received on device tray and tapped by the user.

     alert('data was tapped');
        this.tab.select(2);
          //this.navCtrl.push(ViewurgentnewsPage); also tried this

    }else{
      //Notification was received in foreground. Maybe the user needs to be notified.

        alert('this was received on foreground');


    }
    });