Cewolf Legend coming twice

Hi,

The legend is coming two times.
Also color of the line is mixed with two colors w.r.t the legend shown

Code:
1) DatasetProducer

package com.test.graph;

import java.util.Date;
import java.util.List;
import java.util.Map;

import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

import com.test.graph.DAO.InvokeQuery;
import com.test.graph.bean.GraphBean;

import de.laures.cewolf.DatasetProduceException;
import de.laures.cewolf.DatasetProducer;
import de.laures.cewolf.tooltips.XYToolTipGenerator;

public class LineGraphDB implements DatasetProducer,XYToolTipGenerator{

public String getProducerId() {
		return "XYDataProducer";
	}

public boolean hasExpired(Map arg0, Date since) {
		return System.currentTimeMillis() - since.getTime() > 0L;
	}

public Object produceDataset(Map arg0) throws DatasetProduceException {
		XYSeries series = new XYSeries("Bottom Text Here");
		InvokeQuery iv = new InvokeQuery();
		List<GraphBean> gbList = iv.getList();
		for(GraphBean graphBean:gbList){
			series.add(Double.parseDouble(graphBean.getX()),Double.parseDouble(graphBean.getY()));
		}
		XYSeriesCollection xyDataset = new XYSeriesCollection(series);
		xyDataset.addSeries(series);
		return xyDataset;
	}

public String generateToolTip(XYDataset arg0, int arg1, int arg2) {
		return "(x="+arg0.getXValue(arg1, arg2)+",y="+arg0.getYValue(arg1, arg2)+")";
	}
}

2. jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://cewolf.sourceforge.net/taglib/cewolf.tld"
	prefix='cewolf'%>
<%@page import="de.laures.cewolf.ChartPostProcessor"%>
<%@page import="com.test.graph.chartprocessor.ColorProcessor"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Line Graph</title>
</head>
<%
	ChartPostProcessor postprocessor = new ColorProcessor();
	pageContext.setAttribute("postprocessor", postprocessor);
%>
<body>
<jsp:useBean id="lineGraph" class="com.test.graph.LineGraphDB" />

<cewolf:chart id="XYChart" title="XYChart" type="xy" xaxislabel="X-axis"
	yaxislabel="Y-axis">
	<cewolf:data>
		<cewolf:producer id="lineGraph" />
	</cewolf:data>
	<cewolf:chartpostprocessor id="postprocessor">
	<cewolf:param name="bgColor" value="#FFFFFF"></cewolf:param>
	</cewolf:chartpostprocessor>
</cewolf:chart>
<cewolf:img chartid="XYChart" renderer="cewolf" width="500" height="400">
	<cewolf:map tooltipgeneratorid="lineGraph" />
</cewolf:img>
</body>
</html>

3.ChartPostProcessor

package com.test.graph.chartprocessor;

import java.awt.Color;
import java.io.Serializable;
import java.util.Map;

import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;

import de.laures.cewolf.ChartPostProcessor;

public class ColorProcessor implements ChartPostProcessor,Serializable{
	private static final long serialVersionUID = -8825255492688438972L;
	public void processChart(Object chart, @SuppressWarnings("rawtypes") Map arg1) {
		JFreeChart jchart = (JFreeChart)chart;
		XYPlot categoryplot = jchart.getXYPlot();
		//Graph BackGround color
		categoryplot.setBackgroundPaint(Color.decode((String) arg1.get("bgColor")));
		//Horizontal Line Color
		categoryplot.setRangeGridlinePaint(Color.black); 
		//Vertical Line Color
		categoryplot.setDomainGridlinePaint(Color.black);
		//Line Color
		categoryplot.getRenderer().setSeriesPaint(0, Color.BLACK);
		//Removing decimal Value on y axis
		NumberAxis rangeAxis = (NumberAxis) categoryplot.getRangeAxis();
		rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
		NumberAxis domainAxis = (NumberAxis) categoryplot.getDomainAxis();
		domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
	}
}