As Cathy said, you should able to find a good documentation
from the remoteobject & combobox tag. combobox takes array of
objects as dataprovider. You can specify the field which you want
to use by specifying it in the labelField attribute
Example:
<?xml version="1.0"?>
<mx:Application width='800' height='800' xmlns:mx="
http://www.adobe.com/2006/mxml"creationComplete="setup()">
<mx:RemoteObject destination="qa.echoservice.Echo"
id="ro"/>
<mx:Script>
<![CDATA[
private function setup():void
{
ro.echoObjects([{label:"MA",value:"Massecussetts"},{label:"NY",value:"New
York"}]);
}
]]>
</mx:Script>
<mx:ComboBox dataProvider="{ro.echoObjects.lastResult}"
labelField="value"/>
</mx:Application>
By removing the labelField="value", combobox shows MA,NY.
Otherwise, combobox use value field . You should see Massachusetts,
New York in the box
Please look it up from the doc for more details
Hope it help!
William Chan