Is their a way to set a constant with spring actionscript?

For instance, take this class

package org.as3commons.logging {
	import org.as3commons.logging.setup.SimpleTargetSetup;
	public const LOGGER_FACTORY: LoggerFactory = new LoggerFactory( 
                  new SimpleTargetSetup( TRACE_TARGET ) );
In code I could do following:

LOGGER_FACTORY.setup = new SimpleTargetSetup(...)
How can I configure this constant in Spring Actionscript? I'ts clear that defining an object like this won't work

<object id="loggerFactory" class="org.as3commons.logging.LOGGER_FACTORY"/>

btw, is it good practice to have constant values in a package without a class being defined (I wouldn't even know how to call these constants).