setOnLoadingStart AND setOnLoadingEnd - is not a function!

Why I have error: “setOnLoadingStart AND setOnLoadingEnd - is not a function”





MY CODE:    

tree = new dhtmlXTreeObject(‘treeBox’,“100%”,“100%”,0);

tree.setImagePath(“/js/dhtmlxTree/imgs/”);

tree.setXMLAutoLoading(“URL/get_node”);

tree.attachEvent(“onDblClick”, onDblClick);



tree.setOnLoadingStart(OnLoadingStart);

tree.setOnLoadingEnd(OnLoadingEnd);



tree.loadXML(‘URL/get_node?id=0’);

the event setting methods are deprecated in latest codebase, just use

tree.attachEvent(“onXLS”,OnLoadingStart);
tree.attachEvent(“onXLE”,OnLoadingEnd);