Flex Tree/Webservice Interaction

Question

Hi All... I'm trying to fill a tree with the result of a web
service, and then trigger that web service again when a node is
opened. I'll try to explain....
I have a webservice that returns facility information. I feed
it a facilityID and it gives back facilities and devices that are
assigned to that facility. So this webservice can allow you to
drill down...i.e. facility 1 has device x,y,and z and facility 2,
send 2 to the WS and get back devices a,b, and c.
My problem is that I can't seem to figure out how to do this.
I have the web service definition:
<mx:WebService id="gssdata" showBusyCursor="true" wsdl="
http://localhost/GSSData/service.asmx?WSDL">
<mx:operation name="facilityList" resultFormat="e4x"
fault="showFault(event)" result="getFacilityResult(event)" >
<mx:request>
<sID>{idField.text}</sID>
</mx:request>
</mx:operation>
</mx:WebService>
and I call the tree:
<mx:Tree id="tree" top="72" left="50"
dataProvider="{facilityMainData.facilityListResult.facilities.facility}"
height="224" width="179" itemOpen="itemClick(event)"
labelFunction="treeLabel"/>
I'm able to load the page and see the initial data in the
tree, but I can't figure out how to do the itemOpen Event. How can
I call the web service and get the result of the web service
without changing all that's in the tree already? Do I somehow have
to have another event handler for this? and if so, how do I tell
that handler what node to add the results to?
I'm really stumped by this, so any help anyone could give
would be really appreciated!!!
thanks,
Adam

Answer 1

hi theosa
try these
<folder label="XXX" isBranch="true"/>