How to set values along y-axis using kichart

I am developing the graph using kichart. But i don't know how to set the values along the y-axis like x-axis values and more thing how to remove the trial version tag in the image. I am getting the value as "0.00" along the y-axis. How to modify values like x-axis. is kichart is better to implement the line graphs? if No, then please suggest me the other way.

code

public class chartview extends Activity

{

LineView lv;
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.main);
    String xaxis[]=new String[4];

    xaxis[0]="2006";
    xaxis[1]="2007";
    xaxis[2]="2008";
    xaxis[3]="2009";
    float line1[]=new float[4];
    line1[0]=120;
    line1[1]=240;
    line1[2]=500;
    line1[3]=100;
    float line2[]=new float[4];
    line2[0]=100;
    line2[1]=650;
    line2[2]=700;
    line2[3]=300;
    float line3[]=new float[4];
    line3[0]=50;
    line3[1]=50;
    line3[2]=50;
    line3[3]=50;
    Aitem items[]=new Aitem[3];
    items[0]= new Aitem(Color.BLUE,"pauOut",line1);
    items[1]= new Aitem(Color.GREEN,"pauOut",line2);
    items[2]= new Aitem(Color.YELLOW,"pauOut",line3);
    lv=new LineView(this);
    lv.setTitle("Yearly Budget");
    lv.setAx开发者_如何学PythonisValueX(xaxis);        
    lv.setItems(items);
    setContentView(lv);
}

}

But i don't know how to set the values along the y-axis :

lv = new LineView(this);
lv.setYAxisRegionStart(50f);
lv.setYAxisRegionEnd(500f);

more thing how to remove the trial version tag in the image.

that's easy, buy it.