Как сделать выборку на удаление в mongoDB из Meteor.JS?

"click .delall": function() {
            var person = Tasks.findOne({owner: Meteor.userId()});
            Tasks.remove({_id: person._id}, {checked: true});
        }

"click .delall": function() {
            Tasks.find({owner: Meteor.userId(), checked: true}).forEach(function(item, value, counter) {
                Tasks.remove({_id: item._id});
            });
        }

Meteor.methods({
    addNewTask: function(taskText) {
        if(!Meteor.userId()) {
            throw new Meteor.Error("not-authorized");
        }

        Tasks.insert({
            task: taskText,
            udate: new Date(),
            checked: false,
            owner: Meteor.userId(),
            username: Meteor.user().username
        });
    },
    updateTask: function(taskId, taskChecked) {
        Tasks.update(taskId, {$set: {checked: ! taskChecked}});
    },
    deleteTask: function(taskId) {
        Tasks.remove(taskId);
    },
    deleteCheckedTask: function() {
        Tasks.remove({owner: Meteor.userId(), checked: true});
    }
});