The location of the folder containing FusionCharts SWF files can be specified using the FCFolder attribute. You would find the list of all available attributes in the XML by Elements section. By default, the location is "/src/fusioncharts". You can change the location from the design view's Property Window or directly changing the source.
Let us assume that we would keep the chart SWF files in a folder named "newLocation" placed in the same folder as the Application MXML file. To provide this folder as the current chart location we would set the FCFolder. After modification, the source would look like:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:ns1="com.fusioncharts.components.*">
<ns1:FusionCharts x="10" y="10" FCDataURL="Data.xml" FCFolder="newLocation" FCChartType="Column3D"/>
</mx:Application>
The FCFolder property can also be set from the design view. In design view, follow Flex Properties > FusionCharts > FCFolder and specify the value.
If you specify "." as FCFolder property's value the folder containing the Application MXML file is taken as the folder containing the chart SWF files.
The path specified in the FCFolder property should be relative to the folder containing the Application MXML file.