Bug 143671 [Linux-As][Smoke]Parameter can't be used.
Details: [Linux-As]Parameter can't be used. Setp: 1.New a report design. 2.New a paremeter. 3.Preview and click Run Report Parameter. 4.Dialog pop up and press OK. Actual resutl: Report error.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
{
		IReportRunnable runnable = (IReportRunnable) this.reportDesignHandle
				.getDesignObject( );
		assert runnable != null;
		ModuleHandle model = runnable.getDesignHandle( ).getModuleHandle( );
		assert model != null;
		return model.getFlattenParameters( );
	}
	/**
	 * @return the parameter handle
	 */
	public ParameterHandle findParameter( String paramName )
			throws ReportServiceException
	{
		if ( paramName == null )
			return null;
		IReportRunnable runnable = (IReportRunnable) this.reportDesignHandle
				.getDesignObject( );
		assert runnable != null;
		ModuleHandle model = runnable.getDesignHandle( ).getModuleHandle( );
		assert model != null;
		return model.findParameter( paramName );
	}
	/**
	 * @return the maxRows
	 */
	public int getMaxRows( )
	{
		return maxRows;
	}