The Parameter Server allows Chart Viewer to listen to requests from a specified port using TCP/IP and update the data dynamically. The syntax in JNLP is:

<applet-desc
name="Chart Viewer"
main-class="quadbase.chartviewer.Viewer"
width="640"
height="480">

<param name="ParameterServer" value="machine:portno">

</applet-desc> 

For security reasons, the machine is usually the same as the web server machine. Therefore, you can leave machine empty (i.e. value=":portno").