Flex & cf 6, am i missing something - code snippet

Question

So my first attempt at this, and I wondering if I'm missing
something....
Flex Builder 3 app, calling a cfm proc on a CF6 server. Code
snippet below. Just a simple call to return some CGI vars as a
test.
I'm not getting my datagrid populated, not sure if it's just
not communicating, or what. Thanks for any suggestiongs, or help.
---- mxml code ----
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
xmlns="*" layout="absolute"
creationComplete="userRequest.send()">
<mx:HTTPService id="userRequest" url="
http://xxxxxx.com/test/cgi-vars-for-flex.cfm"
useProxy="false" method="POST">
</mx:HTTPService>
<mx:DataGrid id="dgUserRequest" x="10" y="10"
dataProvider="{userRequest.lastResult.cgi.vars}" height="142">
<mx:columns>
<mx:DataGridColumn headerText="CGI Variable"
dataField="name"/>
<mx:DataGridColumn headerText="Value"
dataField="value"/>
</mx:columns>
</mx:DataGrid>
<mx:Form x="10" y="10" width="100">
</mx:Form>
<mx:Button label="Refresh" click="userRequest.send()"
x="10" y="160"/>
</mx:Application>
---- cgi-vars-for-flex.cfm ----
<cfprocessingdirective pageencoding = "utf-8"
suppressWhiteSpace = "Yes">
<cfxml variable="cgiXML">
<cgi>
<cfoutput>
<vars>
<name>CGI.SCRIPT_NAME</name>
<value>#CGI.SCRIPT_NAME#</value>
</vars>
<vars>
<name>CGI.SERVER_NAME</name>
<value>#CGI.SERVER_NAME#</value>
</vars>
</cfoutput>
</cgi>
</cfxml>
<cfoutput>#cgiXML#</cfoutput>
<!--- <cfdump var=#cgiXML#> --->
</cfprocessingdirective>

Answer 1

So I decided to change the url="
http://xxxxxx.com/test/cgi-vars-for-flex.cfm"
to url="
http://xxxxxx.com/test/cgi-vars-for-flex.xml"
(xml code below), to see if that works, and everything works fine.
So, I suspect there's something wrong with my cfm code.
Any ideas, anyone ? :)
Thanks,
Ray
---- xml file ----
<?xml version="1.0" encoding="ISO-8859-1"?>
<cgi>
<vars>
<name>CGI.SCRIPT_NAME</name>
<value>/dev/development/rdixon/test/cgi-vars-for-flex.cfm</value>
</vars>
<vars>
<name>CGI.SERVER_NAME</name>
<value>fusionmx-dev1.e-dialog.com</value>
</vars>
</cgi>