Flex binding List selectedItem

I`m new with flex, and trying to combine data for 2 List selections, (SEE CODE BELOW):

<s:Label x="538" y="130" text="Industry of Interest:"/>
        <s:List id="reIndustry" x="538" y="150" width="165" height="122" dataProvider="{recruitIndustries}" labelField="industry"></s:List>
        <s:Label x="723" y="130" text="Qualifications:"/>
        <s:List id="reQualifications" x="723" y="150" width="165" height="122" selectedItem="reIndustry.selectedItem.qualification" labelField="qualification"></s:List>

What i would like to accomplish is that when you select data from "reIndustry", more data of the selected item will then show in "reQualifications" List.

Here is my Data:

 <s:ArrayList id="recruitIndustries">
        <fx:Object industry="Admin/PA/Secretary" qualification="Other"/>
        <fx:Object industry="Automotive" qualification="Painter"/>
        <fx:Object industry="Building/Construct/Mine"/>
        <fx:Object industry="Engineering"/>
        <fx:Object industry="Finance/Accounting"/>
        <fx:Object industry="FMCG"/>
        <fx:Object industry="General Employment"/>
        <fx:Object industry="Health and Skincare"/>
        <fx:Object industry="Insurance"/>
        <fx:Object industry="International"/>
        <fx:Object industry="IT/Computer"/>
        <fx:Object industry="Legal"/>
        <fx:Object industry="Logistics"/>
        <fx:Object industry="Management"/>
        <fx:Object industry="Manufacturing"/>
        <fx:Object industry="Medical"/>
        <fx:Object industry="Part Time/ Temps"/>
        <fx:Object industry="Professions"/>
        <fx:Object industry="Retail"/>
        <fx:Object industry="Sales and Marketing"/>
        <fx:Object industry="Tourism/Hospitality"/>

If possible, how can I add more values for showing in the second List "reQualifications".


@RIAstar question is Correct.

You can do it by below code:-

            import mx.collections.ArrayCollection;

            import spark.events.IndexChangeEvent;

            private var moreDataProvider:ArrayCollection = new ArrayCollection();
            private function itemClickHandler(event:IndexChangeEvent):void

    <s:Label x="538" y="130" text="Industry of Interest:"/>
    <s:List id="reIndustry" dataProvider="{recruitIndustries}" x="538" y="150" width="165" height="122" 
            labelField="industry" change="itemClickHandler(event)"/>
    <s:Label x="723" y="130" text="Qualifications:"/>
    <s:List id="reQualifications" dataProvider="{moreDataProvider}" x="723" y="150" width="165" height="122" 

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