//Note: This code only works with V9 or earlier versions.
activeSheet.setDataContext(new GC.Spread.Sheets.DataContext(
            '@Url.Action("Load", "Home")',
            '@Url.Action("Create", "Home")',
            '@Url.Action("Update", "Home")',
            '@Url.Action("Delete", "Home")'
        ));

alert(activeSheet.getDataContext().create);