How to change loadsmore parameter and ajax call by portfolio filter click

Hi,

I asked this question at Discussion on Canvas page at Envato also.
http://themeforest.net/item/canvas-the-multipurpose-html5-template/9228123/comments?utf8=%E2%9C%93&term=fotoizzet&from_buyers_and_authors_only=0
My question is the continious of the my solved previous problem.
I solved previous problem by your solution.

My new problem is
When select an filter, i want to change loadsmore ajax call parameter.

My Code;

var $container = $('#portfolio'),
        selector = '*';

$container.isotope({transitionDuration: '0.45s'});

$('#portfolio-filters a').click(function () {
    $('#portfolio-filters li').removeClass('activeFilter');
    $(this).parent('li').addClass('activeFilter');
    selector = $(this).attr('data-filter');
    $container.isotope({filter: selector});
    $("#load-next-posts>a").attr('href', function(i,a){
        return a.replace(/filter=[^&]+/, 'filter='+selector);
    });
    return false;
});

The code working and i can see DOM changed.
filter parameter * change as movies.

    [
       loads more
    ](/api/loadsmore?page=1&filter=movies)

But ajax call still calling with * parameter.

I couldn't find the solution. Please help.