[Zope] Calling objects with arguments in a sequence

[seb]

Hi

I'm using the Photo product, instances of which I can call, with
arguments, like this:

	<dtml-var "my_photo(display='thumbnail')">

However, I can't work out how to pass arguments to each sequence item
when iterating over a sequence.

For example, I've tried:

	<dtml-in objectValues(['Photo'])">
		<dtml-var "_['sequence-item'](display='thumbnail')">
	</dtml-in>

(..not that I expect that to work :)

And I get

Error Type: TypeError
Error Value: call of non-function (type string)

I've tried various combinations of ways of calling the sequence-item,
but they all return the same error.  Could anyone suggest how I should
do this?  Thanks in advance...

Seb