Please view this article for a scenario where Task History is demonstrated: Supporting Collaboration.

Component: com.avoka.livecycle.taskHistory 1.0

TaskHistory Service

Task History: Append task history information into a repeating XML element. Task ID is used to determine the user who completed the action, and the route chosen. The repeat element must be a repeating element inside a form or XML variable. Specify a relative element or attribute name under the repeat element.

Operation: taskHistory

Set the Task History: Set values of a task history.

Input Parameter	Type	Description
Task ID	java.lang.String	In the situation where a history item needs to output information about the user who completed the task; this input parameter cannot be blank. Such is the case when a History Item a typed: Login (the login of the user who completed a task), 'First Last' (first & last name of the user who completed a task), 'Last First' "Last', 'First' or 'Route Chosen'.
Repeat Element	java.lang.String	A repeat element variable expression is intended to point to an element which is to be repeatedly appended to, each time a Task History task gets executed. This means that this XPath expression must point to an element inside (not the root node) of an XML variable. For example an XML-typed variable called 'xmlEl' might have a Repeat Element Expression of '/process_data/xmlEl/rootName/repeatingElement'. Each time this task gets executed another instance of 'repeatingElement' gets added under 'rootName'.
History Items	List<HistoryItem>	This parameter encapsulates a list of history items, each of which is to be added underneath one instance of the repeating element. That is, each time this task gets executed every sub-element in the History Items list gets added under 'repeatingElement' in our example. For instance a history item with sub-element name 'UserName' will be added under 'repeatingElement' in our XML tree. Each history item has a type assigned to it, which can either be a date/timestamp, a user's name that completed a user task, or an XPath type. If the type is XPath then the XPath expression must be supplied as well.

Licence Configuration:

Parameter	Type	Description
License Key	java.lang.String	The license key provided to you when you purchased a production license for this Solution Component. If blank this Solution Component will assume evaluation mode and allow 100 invocations or 6 hours up-time.
License Organisation	java.lang.String	The organization name you provided to Avoka for which you are licensing this Solution Component.