Why don't change the Menu?

I use a event on a Tree for change the content of menu, but this doesn’t change.

when is load the page have a “menu_blank.xml” and when is a click in a node of the tree change to “menu_blank2.xml”

[code]

var dhxLayout, dhxMenu;
function doOnLoad() {
dhxMenu = dhxLayout.cells(“b”).attachMenu();
dhxMenu.setIconsPath(“includes/imagenes/imgs/”);
dhxMenu.loadXML(“xml/sistema/menu_blank.xml”);
}[/code]

[code]function treeClick(id)
{
dhxMenu.loadXML(“xml/sistema/menu_blank2.xml”);
return true;

}[/code]

The answer was easy.

dhxMenu.clearAll()