Hello again I´m still testing the usability and reliability of Zope. To accomplish this goal I am developing a very very simple shopping cart. But I got troubled by something aparently simple. This is the code: <dtml-in "SESSION['cartItems']"> <dtml-in "sqlSearchProduct(productID=sequence-item)"> <tr><td><dtml-var productName></td><td><dtml-var price></td></tr> </dtml-in> </dtml-in> SESSION['cartItems'] is an array created in another DTML document using the well known SQLSession product. Here I am retrieving the itens of this array and passing it to a ZSQL method to get the selected items. The sqlSearchProduct, alone, works well. If I substitute the inner <dtml-in "sql...> for a simple <dtml-var sequence-item> the block works fine, otherwise it gives me the following error: Zope has encountered an error while publishing this resource. Error Type: NameError Error Value: sequence change the line - <dtml-in "sqlSearchProduct(productID=sequence-item)"> to + <dtml-in "sqlSearchProduct(productID=_['sequence-item'])"> in the line as it is now, sequence-item is interpreted as a Python expression, meaning sequence minus item. The second incantation gets the variables 'sequence-item' from the current namespace _ hth Rik