(FMX04)XML Combobox- Selecting certain data

Hi,

I am wanting to create a combobox that displays data from an XML file. I’ve done that through the use of the XML connector component and binding it to the combobox.

The problem is i dont want all of the Data values displayed in the combobox. just values that dont already exist from that array. eg. The XML file is a list of Car makes and models. It contains about 120 cars of varying manufacturers. Theres usually about 10 from each manufacturer so i dont want that manufacturer displayed in the combobox more than once.

Any ideas on how to do this, the XML file is setup like the folllowing:

 
<stocklist>
<vehicle>
<make>Toyota</make>
<model>Rav4</model>
</vehicle>
<vehicle>
<make>Toyota</make>
<model>Corolla</model>
</vehicle>
</stocklist>