====Subscribe====

The **Subscribe** function is part of the [[HMIPanel]] class in the ARDI Javascript API.

You use the command to subscribe to changes in a single data point. 

===Parameters===

**Point**: The [[ardi point code|point code]] for the property you want to monitor. Note that if you're creating a dynamic SVG file, you might be able to use an [[Embedding Codes|embedding code]].

**Callback**: The function to be called when a change happens. The callback function has a single parameter, the new value. Note that this value might be a string - if performing math on it, you should ensure to run //parseFloat// before use.

**Animated**: An optional parameter, indicating if you would like this data to animate between values. TRUE (the default) will animate, while FALSE will snap to the new value immediately.

===Usage===

<code>
var connection = HMIPanel();
connection.Subscribe("10:20:measurement",function (val) {
   console.log("New Value: " + parseFloat(val).toFixed(2));
});
connection.ConnectTo("myardiserver");
</code>

Normally, your Subscribe calls should be before a call to [[ConnectTo]].