Is this supposed to publish?

gistfile1.js

//Server
Meteor.publish("requests", function(player_id) {
    var self = this;
    var uuid = Meteor.uuid();
    var handle = Calls.find({toUser: player_id, status: "request"}).observe({
        added : function(doc) {
            self.set("requests", uuid, doc);
            self.flush();
        }
    });
});

//Client
Meteor.subscribe("requests", Session.get('player_id'), function(){
    var call = Requests.findOne();
    Meteor.call("answerCall", call._id);
});