<s:ComboBox 
    xmlns:fx="http://ns.adobe.com/mxml/2009"     
    xmlns:s="library://ns.adobe.com/flex/spark"    
    width="150"
    color="0x0000FF"
    symbolColor="0x00FF00"
    restrict="0123456789">
    
    <s:dataProvider>
    	<s:ArrayCollection>
    		<fx:String>123456</fx:String>
    		<fx:String>2254</fx:String>
    		<fx:String>12</fx:String>
    		<fx:String>56789</fx:String>
    		<fx:String>5678901</fx:String>
    		<fx:String>3</fx:String>
    		<fx:String>5</fx:String>
    		<fx:String>2</fx:String>
    		<fx:String>000</fx:String>
    		<fx:String>00</fx:String>
    		<fx:String>1923</fx:String>
    		<fx:String>1243</fx:String>
    		<fx:String>56711</fx:String>
		</s:ArrayCollection>
	</s:dataProvider>
	
</s:ComboBox>