Populating subsequent select boxes with DWR

[Fletcher Munson]

I'm want to use DWR (on a struts 2 page) to populate multiple select lists subsequently (about 5 times), but I can't figure out how to do it. The initial list is populated from the with values from the application context when the page loads - this isn't a problem. I select a value from this list, and my second list gets populated (works well). I select a value from the second list, and this is where I have the problem - there aren't any values in the parameter being passed in. I can get an alert to give me something "meaningful" from param, param.id, param.name, but not param.value (this is undefined). Upon further investigation (viewing the source of the webpage) I notice the select list isn't being populated, but I can see fresh values in the dropdown on the UI every time. I'm not really sure what I'm doing wrong, or even if I AM doing something wrong. In the end I need to have all the ids selected from each select box so I can save the data. My code is below if anyone can point me in the right direction. Thanks in advance.

This is included in another JSP page:

<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>

<script language="JavaScript"
	src='<html:rewrite page="/dwr/engine.js" module=""/>'
	type="text/javascript"></script>
<script language="JavaScript"
	src='<html:rewrite page="/dwr/util.js" module=""/>'
	type="text/javascript"></script>
<script language="JavaScript"
	src='<html:rewrite page="/dwr/interface/Transaction.js" module=""/>'
	type="text/javascript"></script>
<script language="JavaScript" type="text/javascript">
	
	function setManagers(fund){
		if(fund.value != "-1"){
		Transaction.getManagers(fund.value, updateManagers);
		}
	}
	
	function updateManagers(managers){
	
	alert(managers[1].manager.id);	//gives me an numeric id - this is good
	alert(managers[1].name); //gives me a name - this is good
		dwr.util.removeAllOptions('TransactionAction_managerNameBean');
		dwr.util.addOptions('TransactionAction_managerNameBean',[{id:'2', name:'--- Please Select ---'}]);
		dwr.util.addOptions('TransactionAction_managerNameBean',managers,'manager.id','name');
	}
			
	function setLegalEntities(manager){
	
	alert(manager);//gives me [object] - this is good? I have something
	alert(manager.id);//gives me "MyFormName_managerNameBean" - this is good? tag from the html?
	alert(manager.name);//gives me "managerNameBean" - this is good? tag from the html?
	alert(manager.value);//gives me "undefined" - this is where I expect a value.
		if(manager.value != "-1"){
		//errors out here because the manager.value is undefined.
		Transaction.getLegalEntity(manager.value, updateLegalEntities);
		}
	}
	
	function updateLegalEntities(legalEntities){
			//update the legalEntity list
		dwr.util.setValue('TransactionAction_legalEntityNameBean',legalEntities,'legalEntities.id','name');
	}
			
	function setClasses(legalEntity){
		if(legalEntity.value !="-1"){
		Transaction.getClasses(legalEntity.value, updateClasses);
		}
	}
	
	function updateClasses(Classes){
			//update the class list
		dwr.util.setValue('TransactionAction_ClassBean',Classes,'Classes.id','ClassName');
	}
	
	function setSeries(Class){
		if(Class.value !="-1"){
		Transaction.getSeries(Class.value, updateSeries);
		}
	}
	
	function updateSeries(series){
			//update the Series
		dwr.util.setValue('TransactionAction_seriesBean',series,'series.id','name');
	}
</script>

This is the main JSP:

 <!-- the jsp containing the javascript is included (i.e. s:include)-->
 <!-- some preceding jsp of no consequence -->

<s:div cssClass="outlineDiv">
		<table>
 		
  <!-- this loads fine -->
 			<tr>
 				<s:select label="Fund" name="fundBean"
 					headerValue="--- Please Select ---" headerKey="-1"
 					list="#application.fundList" listKey="id" listValue="symbol"
 					onchange="setManagers(this)" required="true" />
 			</tr>
 			
  <!-- this will populate based on the above selection -->
 			<tr>
 				<s:select label="Manager" name="managerNameBean"
 					headerValue="--- Please Select ---" headerKey="-1" list="{}"
 					listKey="manager.id" listValue="name"
 					onchange="setLegalEntities(this)" required="true" />
 			</tr>
 			
  <!-- the script breaks before I get this list populated -->
 			<tr>
 				<s:select label="Legal Entity Name" name="legalEntityNameBean"
 					headerValue="--- Please Select ---" headerKey="-1" list="{}"
 					listKey="{}" listValue="{}" onchange="setClasses(this)"
 					required="true" />
 			</tr>
 			<tr>
 				<s:select label="Class" name="classBean"
 					headerValue="--- Please Select ---" headerKey="-1" list="{}"
 					listKey="{}" listValue="{}" onchange="setSeries(this)"
 					required="true" />
 			</tr>
 			<tr>
 				<s:select label="Series" name="seriesBean" value="seriesList"
 					headerValue="--- Please Select ---" headerKey="-1" list="{}"
 					listKey="{}" listValue="{}" required="true" />
 			</tr>
 			<tr>
 				<s:textfield label="Series Name" name="transaction.seriesBean"
 					disabled="true" required="true" />
 			</tr>
 			
 
  <!-- some other jsp using more selects, and fields, etc. -->
  
  		</table>
 </s:div>
 
  <!-- some other jsp of no consequence -->