Custom Setting Length Menu

HillChris1234

I have a DataTable that's doing server side processing. I'm returning the total number of records to the grid, and want to use that to dynamically set the LengthMenu. I can calculate the array in the drawCallback property, but the LengthMenu property ignores that.

So, in this initialization:

    var pageSizeBuilder = [25, 50, 75];

    var table = $('#' + tableName).DataTable({
        "autoWidth": false,
        "processing": false,
        "serverSide": true,
        "stateSave": true,
        "renderer": "bootstrap",
        "ajax": {
            "url": "/" + TableOptions.Controller + "/" + Action + "/",
            "data": function (d) {
                d.includeDeleted = $('#chkFilterDeleted').is(':checked')
                if(TableOptions.Controller == "FacilityResourceData")
                {
                    d.ssc = $('#States option:selected').val(),
                    d.ft = $('#FacilityTypes option:selected').text()
                }
            },
            "type": "POST",
            "datatype": "json"
        },
        drawCallback: function (d) {
            pageSizeBuilder = [25, 50]
        },
        "columns": ColumnDefinitions,
        aLengthMenu: pageSizeBuilder
    });

the Page Length options are 25, 50 and 75, which is what I specified when the pageSizeBuilder array was initialized, not what was assigned in the drawCallback. How can I dynamically set up the options in the page length menu?