[jboss-user] [JBoss jBPM] - Round trip process to task variable mapping

[msandoz]

Hi how do i best to explicitly set process variables in the xml process definition? 

also is there an example of a best method for getting a variable from one task to another? or should that always just go back to the process? what I'm trying to do for example is to take the following flow:

(start)-->(node a)-->(node b)-->(end) 

and have (b) use the results of (a). i tried simply using an expression in node b's <action class> variable definition like: 


  | <node name="a">
  |   <action class="myAction">
  |     <myvarname>myvalue</myvarname>
  |   </action>
  |   <transition name="toB" to="b"></transition>
  | </node>
  | <node name="b">
  |   <action class="myAction">
  |     <myvarname>#{a.myvarname}</myvarname>
  |   </action>
  |   <transition name="toEnd" to="end"></transition>
  | </node>
  | 

but it didnt return any value...should i look to embedding a script instead? or do i need to first copy back to the process from a and then from the process to b?


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