Bug 154178 Support projectFolder in BIRT viewer
If the report supports projectFolder, the viewer also need to enhance for this feature.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
}
			else
			{
				params.put( paramName, null );
			}
		}
		return params;
	}
	/**
	 * get parameter object.
	 * 
	 * @param request
	 *            HttpServletRequest
	 * @param parameter
	 *            ScalarParameterHandle
	 * 
	 * @return
	 */
	protected String getParamValueAsString( HttpServletRequest request,
			ScalarParameterHandle parameter )
	{
		String paramName = parameter.getName( );
		String paramValue = null;
		if ( ParameterAccessor.isReportParameterExist( request, paramName ) )
		{
			
			paramValue = ParameterAccessor.getReportParameter( request,
					paramName, null );
			return paramValue;
		}