Using splitAt results with error

Suite and Optimus Suite 5
#1

I get the error: Uncaught TypeError: Object # has no method ‘splitAt’ i console.

This is my code:

       initMyGrid();

function initMyGrid() {
    if ($("#gridMy").length > 0) {
        gridS = new dhtmlXGridObject('gridMy');
        gridS.setImagePath(window.dhx_globalImgPath);
        gridS.enableColumnMove(true);
        gridS.enableAutoWidth(true);
        gridS.enableMultiselect(true);
        gridS.setSkin("light");
        gridS.setInitWidthsP("150, 150, 150, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50");
        gridS.enableSmartRendering(true);
        gridS.isLoaded = false;
    }
}

$(function () {
    loadMyGrid();
});

function loadMyGrid() {
        $("#gridMy").empty();
        initMyGrid();
        
        gridS.isLoaded = true;
        gridS.clearAll();
        $.ajax({
            type: "GET",
            async: true,
            url: "/MyController/ListData",
            data: {
                //
            },
            success: function (data) {
                if (data.widths != undefined) { gridS.setInitWidths(data.widths); }
                gridS.init();
                gridS.splitAt(2);
                gridS.loadXMLString(data.data, function () { });
            }
        });
}

I want it to behave like this:
dhtmlx.com/docs/products/dht … split.html

and instead I get error.

#2

Hi
do you include dhtmlxGrid/codebase/ext/dhtmlxgrid_splt.js?

#3

Please, make sure that dhtmlxgrid_splt.js is included to the page.