How can i instantiate a external method within my Container Product? I've tryed to do this as following: ... from Products.ExternalMethod import ExternalMethod class Container(Folder): meta_type ='Container' def __init__(self, id, title): self.id = id self.title = title .... index_html = DTMLFile("dtml/indexContainer", globals()) search = PythonScript(id='search') searchService=ExternalMethod('searchService','searchService','search','search') ..... The id and title are "searchService" . The module and function name are 'search' and they are located in Extensions directory in my Container Product. The following error is printed: File "/home/zope/Zope2.7.4/lib/python/OFS/Application.py", line 673, in import_product product=__import__(pname, global_dict, global_dict, silly) File "/home/zope/Zope2.7.4/lib/python/Products/Container/__init__.py", line 1, in ? import Container,ItemSimples File "/home/zope/Zope2.7.4/lib/python/Products/Container/Container.py", line 22, in ? class Container(Folder): File "/home/zope/Zope2.7.4/lib/python/Products/Container/Container.py", line 36, in Container searchService=ExternalMethod('searchService','searchService','search','search') TypeError: 'module' object is not callable How could i solve it?