tag - bsh script

[Richard Fleming]

Hi all
   
  How do I access the value of a field, set by the actions tag, in a bsh script?
   
  <action>
  <set field="productId_a" value="${idProduct.productId}"/>
  </action>
   
  I've tried several things in terms of parameters, request, context, 
session... all to no avail. Help please!
   
  lookup.bsh
  ....
  productid = request.getParameter("productId");
  ....
   
  Rick