Hi, I'm trying to learn Zope by doing the examples in the Zope book. I'm having a bit of a problem with the example on page 41 and 42. The problem is in the DTML method interestRateDisplay. The error message said I have a bad parameter, but I can find is for the life of me. Here's the error- invalid parameter: "= "calculateCompoundingInterest(principal, interest_rate, periods, years)"", for tag <dtml-var expr= "calculateCompoundingInterest(principal, interest_rate, periods, years)"
, on line 5 of interestRateDisplay
[Powered by Zope] <http://www.zope.org/Credits> Traceback (innermost last): File /usr/local/Zope-2.5.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /usr/local/Zope-2.5.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/local/Zope-2.5.1-linux2-x86/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: interestRateDisplay) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/local/Zope-2.5.1-linux2-x86/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: manage_edit) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: manage_edit) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/OFS/DTMLMethod.py, line 254, in manage_edit (Object: interestRateDisplay) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 320, in munge (Object: interestRateDisplay) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 340, in cook (Object: interestRateDisplay) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 177, in parse (Object: interestRateDisplay) File /usr/local/Zope-2.5.1-linux2-x86/lib/python/DocumentTemplate/DT_String.py, line 58, in parse_error (Object: interestRateDisplay) Document Template Parse Error: (see above)