[Zope] <Folder instance at 67f918> ???

[Lee Reilly CS1997]

I'm having a problem passing in a list (as a string) to a Python
method...

I am creating a list called 'weights' as follows:

<dtml-call "REQUEST.set('weights',[])">
<dtml-in "REQUEST.form.items()">
        <dtml-if expr="_['sequence-key'] in ('classcode','tablename',
'practicals', 'tutorials', 'assignments', 'bonus')">
        <dtml-else>
                <dtml-call "weights.append(_['sequence-key'] + 'x' +
_['sequence-item'])">
        </dtml-if>
</dtml-in>

When I pass this to a Python method and simply return the value of
weights like:

<dtml-var expr="obtainResults(_.this, `weights`)">

<Folder instance at 67f918> appears in the page (well, in the HTML
source) instead of the actual value of weights.

Where am I going wrong?

displaying <dtml-var weights> gives me:
['b2x5', 'b1x4', 'p9x2', 'p8x3', 'p5x2', 'p4x3', 'p7x2', 'p6x3', 'p1x2',
'p3x2', 'p2x3'] so that's okay.

Can anyone offer me any advice?

Thanks very much in advance,

Lee