fixing error for tutorial
<p>I am trying to implement <a href="http://www.artfulbits.com/articles/samples/aicharts/sample-viewer.aspx?sample=ECGSample" rel="nofollow">this</a> tutorial . But i am getting error  on </p>

<pre><code>import com.artfulbits.aiCharts.ChartView;
import com.artfulbits.aiCharts.Base.ChartArea;
import com.artfulbits.aiCharts.Base.ChartAxisStripLine;
import com.artfulbits.aiCharts.Base.ChartPointCollection;
import com.artfulbits.aiCharts.Base.ChartSeries;
import com.artfulbits.aiCharts.Types.ChartStepLineType;
</code></pre>

<p>The sample can be downloaded from the link mentioned . Thanks</p>
