[Zope] how to create a exUserFolder from Script ?

Hi, I have written a folderlike class in pyton. In my own manage_addMyProduct class I want to create an instance of exUserFolder. How can I do that ? I tried import Products.exUserFolder Products.exUserFolder.manage_addexUserFolder( c,'zodbAuthSource','zodbPropSource','basicMemberSource',1,600 ) but it does not work. It get the following error : 'Products.exUserFolder' module has no attribute 'manage_addexUserFolder' greetings Achim