Get last value of DCI with given description on given node.
Syntax
GetDCIValueByDescription(node, description);
Parameters
- node - Node object. Predefined variable $node can be used to refer to current node in transformation script or event processing policy rule. - description - DCI description. 
Return Value
Last value for given DCI (string for normal DCIs and NXSL:Table object for table DCIs) or null if DCI with given description does not exist or has no collected values.
Examples
GetDCIValueByDescription($node, "Status") -> 0