I am trying to dynamicly add an event to my calendar

From the documentation i have gathered the following code:

    $.ajax({

    type: 'POST',

    url: '/Calendar/findEvents',

    dataType: 'json',

    data: {

        request: 'ajax'

    },

    success: function (data)

    {

        var date = new Date();

        var d = date.getDate();

        var m = date.getMonth();

        var y = date.getFullYear();

        $('.calendar').fullCalendar( 'renderEvent', event

         [{

            title: 'All Day Event',

            start: new Date(y, m, d)

        }]

        );



    }

});

However this does not seem to work.

i get the following error:

Uncaught TypeError: Cannot read property 'source' of undefined fullcalendar.min.js: 6

Can anyone tell me what i am missing or what i am doing wrong in order to add an event to my calendar?