Accessing public variables

Question

I have the code below. What I am trying to do is to print out
the value of a public variable. I am trying to change that public
variable in the function that handles the result of the remote
object call. The problem is the value only seems to change in the
function and no where else. Any ideas?
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" creationComplete="load_list()">
<mx:script>
<![CDATA[
import mx.controls.Alert;
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
[Bindable]
public var material1_ID: int;
public function load_list():void{
material1_ID = 0;
public function addRec():void{
Alert.show('value before' + material1_ID.toString());
insertService.addMaterial('123'); // THis calls my webservice
and returns a query
Alert.show('value after' + material1_ID.toString());
public function addMaterial(event:ResultEvent):void{
material1_ID = 9;
]]>
</mx:Script>
<mx:RemoteObject
id ="insertService"
destination="ColdFusion"
source ="insert"
>
<mx:method name="addMaterial" result="addMaterial(event)"
>
</mx:RemoteObject>
</mx:Application>

Answer 1

This function in your code:
public function addRec():void{
Alert.show('value before' + material1_ID.toString());
insertService.addMaterial('123'); // THis calls my webservice
and returns a query
Alert.show('value after' + material1_ID.toString());
Looks to me like you are making the remote call and then
expecting the next line to access the result. Flex doesn't work
that way. Remote calls (including HTTPService and WebService) are
asynchronous. When you make the addMaterial call, the request goes
out and the response comes back "later". So right after that
request the value won't be changed.
If you print the value in the result handler, you'll see that
it will be changed.