Bug 214706 Script UID doens't work for Chart
Use chart "onRender" property handle and call ModuleUtil.getScriptUID(), it generates the id. But later use this id to get back the PropertyHandle or Script content, it fails.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/PropertyHandle.java
*            the target property name where the element will be moved to.
	 * @throws ContentException
	 *             if the content is not in this slot or if the new container is
	 *             not, in fact, a container, or if the content cannot go into
	 *             the target slot.
	 */
	public void move( DesignElementHandle content,
			DesignElementHandle newContainer, String propName )
			throws ContentException
	{
		if ( content == null || newContainer == null )
			return;
		ContentCommand cmd = new ContentCommand( getModule( ),
				new ContainerContext( getElement( ), propDefn.getName( ) ) );
		cmd.move( content.getElement( ), new ContainerContext( newContainer
				.getElement( ), propName ) );
	}
	/**
	 * Moves a content element into a slot in another container element at the
	 * specified position.
	 * 
	 * @param content
	 *            a handle to the element to move
	 * @param newContainer
	 *            a handle to the new container element
	 * @param propName
	 *            the target property name where the element will be moved to.
	 * @param newPos
	 *            the position to which the content will be moved. If it is
	 *            greater than the current size of the target slot, the content