'Does not change from old value to new value' operator

This table shows the syntax for rules that use the 'Does not change from old value to new value' operator:


Syntax	[Attribute] [Old Value] [Operator] [New Value] [Within] [optional Condition]
Attribute	One of the document attributes selected for monitoring. See Monitor rule - value change.
Old Value	A constant value for the attribute that is monitored.
Operator	Does not change from old value to new value
New Value	A constant value for the attribute that is monitored.
Within	Waiting time the monitor must evaluate value change occurrences since the document with the attribute value [Old Value] has occurred.
Condition (optional)	A monitor condition from the list of predefined conditions. See Monitor rule - value change.
Evaluation if Operator = Does not change from old value to new value	Evaluates to True if these conditions are both met at the end of the time interval: An instance of the document with [Old Value] has occurred. No instance of the document with [New Value] was received by the time the timer offset has expired.

This table shows when alerts are generated:


Document instances	Alert is generated
One document instance contains the Attribute with the [Old Value].	Yes (after the timer expired)
Document instance with the attribute value equal to [Old Value] followed by an instance of the document with the attribute value equal to [New Value].	No if the document with the [New Value] is received within the time interval. Yes if the document with the [New Value] is received after the expiration of the time interval.
Document instance with the attribute value equal to [Old Value] followed by an instance of the document with the attribute value different than the [New Value].	Yes
Document instance with the attribute value equal to [Old Value] followed by an instance of the document with a different attribute value and then followed by a document instance with the attribute value equal to [New Value].	No if the document with the [New Value] is received within the time interval. Yes if the document with the [New Value] is received after the expiration of the time interval.

Example - Does not change from old value to new value

You build a rule to verify if a new sales order is not picked up within 8 hours after its creation. In the rule, you use the Status attribute from the SalesOrder document.

This table shows the syntax of the rule:


Attribute	Status
Old Value	Open
Operator	Does not change from old value to new value
New Value	Working
Within	8 hours