I got this error TypeError: date.match is not a function when i try to set up a date list to be showed in datepicker

$('#datepicker').datepicker({

    format: dd/mm/yyyy,

    language: pt-BR,

    multidate: true

});

//this dates is just a example, I already try to create from another way like:

// var data = new Array(2015-06-19, 2015-06-15) 

//and also not work!



var dates = [2015-06-19, 2015-06-15];

$('#datepicker').datepicker('update', datas);

I notice in the doc Each date is assumed to be a “local” date object, and will be converted to UTC for internal use.

I don't understood what it means. Should I create a list of dates or an Array? what is the difference between them, they are not the same thing?