You could do this easily with Ajax4JSF if you wanted to (if you're using Richfaces then you're already using this). Several advantages over DHTML eg. server-side validation, not trusting the client...etc. Say you had a Bean called MySerialNumbersBean and it had a List of Serial numbers called mySerialNumbers (with the getters and setters). In your page you would have something (roughly) like this: | <s:div id="serialNumbersDiv"> | <ui:repeat value="#{mySerialNumbersBean.mySerialNumbers}" var="serialNumber"> | <h:inputText id="serialNumber" value="#{serialNumber}"> | <a4j:support event="onblur" action="#{mySerialNumbersBean.mySerialNumbers.addSerialNumber()}" reRender="serialNumbersDiv"/> | </h:inputText> | </ui:repeat> | </s:div> | Where all the addSerialNumber() method did was a add(""). You could do this directly from the EL I suppose. Cheers, Damian. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4069544#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...