Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/10/08/changing-the-indeterminate-move-interval-of-a-flex-progressbar-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:ApplicationControlBar dock="true">
        <mx:Label text="indeterminateMoveInterval:" />
        <mx:HSlider id="slider"
                minimum="20"
                maximum="200"
                value="50"
                liveDragging="true"
                snapInterval="1"
                tickInterval="10"
                dataTipPrecision="0" />
    </mx:ApplicationControlBar>

    <mx:ProgressBar id="progressBar"
            label="indeterminateMoveInterval = {slider.value}"
            labelPlacement="center"
            indeterminate="true"
            indeterminateMoveInterval="{slider.value}"
            trackHeight="64" />

</mx:Application>

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