IGetParameterDefinitionTask task = getParameterDefinitionTask( reportDesignName );
IGetParameterDefinitionTask task = getParameterDefinitionTask( design );
	public Collection getSelectionListForCascadingGroup(			IViewerReportDesignHandle design, String groupName,			Object[] groupKeys ) throws ReportServiceException	{		String reportDesignName = design.getFileName( );		try		{			IGetParameterDefinitionTask task = getParameterDefinitionTask( reportDesignName );			task.evaluateQuery( groupName );			return task					.getSelectionListForCascadingGroup( groupName, groupKeys );		}		catch ( EngineException e )		{			throw new ReportServiceException( e.getLocalizedMessage( ) );		}	}