Bug 155177 [regression]The format is inconsistent in toc page and report page of web
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/BirtViewerReportService.java
task.setParameterValues( bean.getParameters( ) );
		task.evaluateQuery( groupName );
		Collection selectionList = task.getSelectionListForCascadingGroup(
				groupName, groupKeys );
		return convertEngineParameterSelectionChoice( selectionList );
	}
	public Collection getParameterSelectionList(
			IViewerReportDesignHandle design, InputOptions runOptions,
			String paramName ) throws ReportServiceException
	{
		IGetParameterDefinitionTask task = getParameterDefinitionTask( design,
				runOptions );
		ViewerAttributeBean bean = getViewerAttrBean( runOptions );
		if ( bean != null )
			task.setParameterValues( bean.getParameters( ) );
		
		Collection selectionList = task.getSelectionList( paramName );
		return convertEngineParameterSelectionChoice( selectionList );
	}
	private IGetParameterDefinitionTask getParameterDefinitionTask(
			IViewerReportDesignHandle design, InputOptions options )
			throws ReportServiceException
	{
		IGetParameterDefinitionTask task;
		if ( design.getContentType( ) == IViewerReportDesignHandle.RPT_RUNNABLE_OBJECT )
		{
			
			IReportRunnable runnable = (IReportRunnable) design
					.getDesignObject( );
			task = ReportEngineService.getInstance( )