How to pass value into Listener in selectOneMenu

Question

I have 2 dropdowns: Type & Code. I want the Code dropdown to change values depending on the Type dropdown if value = A or B or C. How can I pass value of A or B or C into listener so it can understand and process my List ?

     <h:outputLabel value="Type" for="idType" />
     <h:selectOneMenu id="idType" value="#{myController.type}">
         <f:selectItem itemLabel="AAA" itemValue="AAA" />
         <f:selectItem itemLabel="BBB" itemValue="BBB" />
         <f:selectItem itemLabel="CCC" itemValue="CCC" />
         <f:ajax event="valueChange" listener="#{myController.changeCodeList}" render="idCode" execute="@this" />
     </h:selectOneMenu>
     <h:outputLabel value="Code" for="idCode" />
     <h:selectOneMenu id="idCode" value="#{myController.code}" >
         <f:selectItem itemLabel="Select ..." noSelectionOption="true" />
         <f:selectItems value="#{myController.codeList}" />
     </h:selectOneMenu>

Answer 1

remove the event="valueChange" from your <f:ajax or replace it with event="change"

You don't have to pass the value as its already there (in changeCodeList method)

public void changeCodeList(AjaxBehaviorEvent ev) {
    System.out.println(type); //here is your value
    //now repopulate your list based on the value
    codeList = someMethod(type);
}