in the 9.2.2 assignment expression section of the documentation  
http://docs.jboss.com/jbpm/v3/userguide/taskmanagement.html

anonymous wrote :  first-term ::= previous |
  |                swimlane(swimlane-name) |
  |                variable(variable-name) |
  |                user(user-name) |
  |                group(group-name)
  | 

what does variable refer to? I mean, the variable could be anything (and not a 
role or a user or a group) as in the Websale example: item, quantity,address..

And what does the following expression mean? 
anonymous wrote :  < assignment expression='previous --> group(hierarchy) --> 
member(boss)' />
  | 
What does assignment 'previous' mean?
and what does the whole expression mean?

Thanks in advance

Mennen[/url]

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