[Zope] problem with ZCatalog

[Ibaņez Palomar Juan David]

I'm using Zope 2.1.2 and following the tutorial
"Creating XML Applications with Zope" by Amos.

When configuring the ZCatalog (in the "Find items
to ZCatalog" tab) I get the error:

  Error Type: NameError
  Error Value: Eval


the HTML source says:

Traceback (innermost last):
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /usr/lib/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook
    (Object: ElementWithAttributes)
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_catalogFoundItems)
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: manage_catalogFoundItems)
  File /usr/lib/zope/lib/python/Products/ZCatalog/ZCatalog.py, line 306, in manage_catalogFoundItems
    (Object: ElementWithAttributes)
  File /usr/lib/zope/lib/python/Products/ZCatalog/ZCatalog.py, line 489, in ZopeFindAndApply
    (Object: ElementWithAttributes)
NameError: (see above)


The line 489 of the file ZCatalog.py is:

  obj_expr=(Eval(obj_expr, expr_globals), md, md._push, md._pop)



Then I change Eval to eval, and try again, now the error is:

  Error Type: NameError
  Error Value: expr_globals

and the source...

Traceback (innermost last):
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /usr/lib/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook
    (Object: ElementWithAttributes)
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: manage_catalogFoundItems)
  File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: manage_catalogFoundItems)
  File /usr/lib/zope/lib/python/Products/ZCatalog/ZCatalog.py, line 306, in manage_catalogFoundItems
    (Object: ElementWithAttributes)
  File /usr/lib/zope/lib/python/Products/ZCatalog/ZCatalog.py, line 489, in ZopeFindAndApply
    (Object: ElementWithAttributes)
NameError: (see above)




Is this a bug?
or have I done something wrong?



Thanks,
David