Why devIds always is null? thanks.
Webpage:
<h:selectManyListbox value="#{devIds}" size="8" > <s:selectItems value="#{devListForAdd}" var="dev" label="#{dev.englishName}"/> <s:convertEntity /> </h:selectManyListbox>
<s:button action="#{actorDevMaintAction.saveDev}" value="Add" />
@In(required = false) @Out(required=false) private List<User> devIds;
@In is not valid, need to use get/set method.
It's work now.