====Sub===

The **Sub** function is part of the [[HMITTPanel|HMITTPanel]] class used to connect to live ARDI data.

It adds a single point of data to the subscription, and provides a function that is called whenever the value of that point changes.

===Parameters===

^Name^Type/Default^Use^
|Point|String|The name of the data point, made up of the asset name/identifier, a period (.) and the name of the property.|
|Callback|Function|A function to be called when the value changes. The function is called with one parameter - the new value|
|Discrete|Boolean|**True** if this value is treated as a discrete value (ie. not animated)|

===Example===

<code javascript>
   var connection = new HMITTPanel();

   connection.Sub("Asset Name.Property Name",function(v) {
      console.log("New Value: " + v);
   });

  //Connect to the server here...
</code>

===Notes===

This function should be called //before// you call [[Connect|connect]].