Expression

The Expression object is intended for obtaining information about the expression being executed at the moment.

Fields

Name	Description
id	Contains ID (name) of the expression (string).
uid	Contains global ID of the expression (string).
path	Contains path to the expression (string).
currentState	Contains an object of ValueState type and is the result of the last execution of the expression.
comment	Contains a comment for the expression.

Examples

In the following example, all expressions located in the Alarms → Area1 group will return True, the rest will return False.

if (context.expression.path.startsWith('Alarms.Area1'))
  return false;
return true;

In the example below, the expression will return True if the previous result was False, otherwise it will return True.

if (context.expression.currentState.value == false)
  return true;
return false;