<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="top"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            private function init():void {
                slider.value = txt.getStyle("leading");
            }
        ]]>
    </mx:Script>

    <mx:String id="lorem" source="lorem.txt" />

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="leading:" direction="horizontal">
                <mx:HSlider id="slider"
                        minimum="0"
                        maximum="10"
                        snapInterval="1"
                        tickInterval="1"
                        liveDragging="true" />
                <mx:Label text="{slider.value}" />
            </mx:FormItem>
            <mx:FormItem label="height:">
                <mx:Label text="{txt.height}" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:Text id="txt"
            text="{lorem}"
            leading="{slider.value}"
            textAlign="justify"
            width="400"
            preinitialize="init();" />

</mx:Application>