how can i show footer in my dhtmlxgrid?

hi,
i download a standard dhtmlxGrid and trying to use a footer like in this example:
dhtmlx.com/docs/products/dht … ooter.html

but it won’t show me anything, is this footer not available in the standard dhtmlxGrid? :neutral_face:

Yes, it’s available in Professional version only
http://docs.dhtmlx.com/doku.php?id=dhtmlxgrid:api_method_dhtmlxgridobject_attachfooter