HtmlAjaxSupport replacement in Richfaces 4.x

[ramram888]

Hi all,

I have the following in Richfaces 3.3.3:

HtmlAjaxSupport onchangeEvent = new HtmlAjaxSupport();

onchangeEvent.setEvent("onchange");

onchangeEvent.setAjaxSingle(true);

onchangeEvent.addActionListener(handler);

onchangeEvent.setActionExpression(context.getApplication().getExpressionFactory().createMethodExpression(context.getELContext(), "#{myBeanBB.myMethod}", String.class, new Class[0]));

nameSearchFld.getFacets().put("a4jsupport", onchangeEvent);

can anybody give me the replacement code that i should use in Richfaces 4.x