(HTTPService - result="" - to ArrayCollection) - a question for super expert ;)

Question

Firstly look at my example then you will read the question:
Look at example below - I'm using HTTPService component to retrieve data from SQL database
(read_record.php is generating nice and tidy xml file with my data)
<!-- (A) read  -->
<!-- =================== HTTP SERVICE (read_record) ============================ -->
    <mx:HTTPService id="readTimed"
        url="http://www.pudelek.pl/SCRIPT/A/read_record.php"
        result="patient(event)">
    </mx:HTTPService>
Then 'result' is calling a function patient() which task is to assign 'event.result'
to ArrayCollection called 'A_patient_dp'  (this ArrayCollection is a data provider
for a specific data grid)
private function patient(event:ResultEvent):void {
    trace("A - PATIENT - loaded...")
    trace(event.result.patient.patient)
    A_patient_dp = event.result.patient.patient
Everything looks great here, data grid shows all the data from xml file generated
by read_record.php
and now is my problem :
I don't want to display all the data, I want HTTPService to retrieve only particular data
which are described by variable {parametr} - this var is generated by my application
I've dond it this way:
<!-- (A) MAP POSITIONING -->
<!-- =================== HTTP SERVICE (read_record) ============================ -->
    <mx:HTTPService id="readRequestA"
        url="http://www.pudelek.pl/SCRIPT/A/A_send_read_record.php"
            useProxy="false"
            method="POST">
        <mx:request xmlns="">
            <idstaff>{parametr}</idstaff>
        </mx:request>
    </mx:HTTPService>
I'm looking into source of 'A_send_read_record.php' in the internet browser and I see
exact data tree (filtered) which I need.
The problem here is : how to call function patient(event:ResultEvent) and give it
data from the event to be assigned to ArrayCollection - like in first example.
Thanks for all the ideas !!

Answer 1

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Greg Lafrance - Flex 2 and 3 ACE certified
www.ChikaraDev.com
Flex / AIR Development, Training, and Support Services
<mx:HTTPService id="readRequestA"
url="http://www.pudelek.pl/SCRIPT/A/A_send_read_record.php"
useProxy="false" result="patient(event)" method="POST">
  <mx:request xmlns="">
    <idstaff>{parametr}</idstaff>
  </mx:request>
</mx:HTTPService>