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/utility/ParameterAccessor.java
*            http request
	 * @return report format
	 */
	public static String getFormat( HttpServletRequest request )
	{
		String format = getParameter( request, PARAM_FORMAT );
		if ( format != null && format.length( ) > 0 )
		{
			return format;
		}
		return PARAM_FORMAT_HTML; 
	}
	/**
	 * Get preview max rows.
	 * 
	 * @param request
	 *            http request
	 * @return max rows
	 */
	public static int getMaxRows( HttpServletRequest request )
	{
		int curMaxRows = ParameterAccessor.getParameterAsInt( request,
				PARAM_MAXROWS );
		if ( curMaxRows <= 0 )
			curMaxRows = maxRows;
		return curMaxRows;
	}
	/**
	 * Get report element's iid.
	 *