[Zope] How do I specify a list element?

I have a list (I think) created this way: (date = '31-DEC-1999') <dtml-call "REQUEST.set('MyList', _.string.split(date, '-'))"> so now REQUEST['MyList'] should contain 3 elements: 31 DEC 1999 How, in dtml, do I say "give me the value of the 1st element of MyList" or the second or third. I've tried <dtml-var "REQUEST['MyList'][0]"> but I get this error: Error Type: TypeError Error Value: argument 1: expected read-only character buffer, Missing found Now I don't know which part this error is refering to, but anyhow I want this functionality. Thanks for your help, Jake Feasel