Bug 146709 Dates still do not work from main report to sub reports...
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
String paramValue = null;
		if ( ParameterAccessor.isReportParameterExist( request, paramName ) )
		{
			
			paramValue = ParameterAccessor.getReportParameter( request,
					paramName, null );
			return paramValue;
		}
		Object paramValueObj = null;
		if ( this.isDesigner
				&& ( IBirtConstants.SERVLET_PATH_RUN.equalsIgnoreCase( request
						.getServletPath( ) ) || IBirtConstants.SERVLET_PATH_PARAMETER
						.equalsIgnoreCase( request.getServletPath( ) ) )
				&& this.configMap != null
				&& this.configMap.containsKey( paramName ) )
		{
			
			paramValueObj = this.configMap.get( paramName );
		}
		else if ( this.parameterMap != null
				&& this.parameterMap.containsKey( paramName ) )
		{
			
			paramValueObj = this.parameterMap.get( paramName );
			
			paramValueObj = ParameterValidationUtil.getDisplayValue( null,
					parameter.getPattern( ), paramValueObj, locale );
		}
		if ( paramValueObj != null )
			paramValue = paramValueObj.toString( );