The following example shows how you can change the move interval of an indeterminate progress bar in Flex by setting the indeterminateMoveInterval style.

 
   
<?xml version="1.0" encoding="utf-8"?> 

<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>