I am attempting to pass a simple list of strings (say mylines=['line 1','line 2','line 3'], generated by a Python Script) into an External Method, so calling it in a dtml-method: <dtml-let filename="myExternalMethod(fileID='myFileName.pdf',lines=mylines)"> This external method then uses the contents of this list, and returns a filename. The External Method is accepting parameters, and indeed seems to be accepting the list - if I change the method to return lines, and print that on screen (call dtml-var... instead of let filename=...), it prints ['line 1','line 2','line 3']. However, on attempting to view the dtml-method, I get the following error: Error Type: AttributeError Error Value: __getitem__ Traceback (most recent call last):<br> File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Try.py", line 149, in render_try_except result = render_blocks(self.section, md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Let.py", line 75, in render else: d[name]=expr(md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Util.py", line 159, in eval return eval(code, d) File "<string>", line 2, in f File "C:\PROGRA~1\ZopeSite\lib\python\Products\ExternalMethod\ExternalMethod.py", line 198, in __call__ try: return apply(f,args,kw) File "C:\PROGRA~1\ZopeSite\Extensions\myExternalMethod.py", line 28, in run y = 20 AttributeError: __getitem__ line 28 of the External Method is: for line in lines: (then attempts to use the 'line') I am running Zope 2.5.1, Win 2k, btw. I have tried several things, but nothing seems to work. This seems to work fine if the list is declared inside the External Method, but not if it is passed to it. Is this a feature of Zope, or of my inability? Either way, how can I get around it? TIA Ashley _________________________________________________________________ Get Hotmail on your mobile phone http://www.msn.co.uk/mobile