Cant refresh telerik grid using javascript

[neal]

Hi
I am having troubles refreshing a grid

here is the function that does it

function refreshTelerikGrid(grid) {
        var tgrid = grid.data("tGrid");
        tgrid.rebind();
        //tgrid.ajaxRequest();
    }

heres the code that calls the function

var tgrid = $('#Firms').data("tGrid");
        refreshTelerikGrid(tgrid);

the code runs (as watching it on firebug) but the grid does not refresh.

can anyone help please :)

thanks in advance