[Zope] xml-rpc question

[Ben Avery]

hi,

I'm using Zope (2.6.0, Pyth 2.1.3, Solaris 2.7) as an XML-RPC server, 
and need to use the XML-RPC boolean datatype.

I have a test python script, which accepts a single-struct (dictionary) 
parameter, checks a boolean value passed to it and responds with another 
  boolean value, but I'm having problems with importing permissions.

my script, booltest:

##parameters:=param
from xmlrpclib import True, False

if param['dead'] == True:
	alive = False
else:
	alive = True

return {'name': param['name'],
         'alive': alive}


when I call the method from a standalone python script, testbool.py:

#!/usr/local/bin/python
s=xmlrpclib.Server("http://www.myzopeserver.com")

p1 = {'name': 'ben',
       'dead': xmlrpclib.False}

res = s.test.testbool(p1)
print str(res)


I get a Zope error (bottom of stacktrace returned):
ImportError: import of "True" from "xmlrpclib" is unauthorized. You are 
not allowed to access True in this context

for the security settings of the folder that booltest lives, I have set 
the user to have permissions on:
access contents information
import/export objects
query
view


is this a problem with security settings on the object or container, or 
something else?
can anyone help?

TIA

Ben Avery
YouthNet UK