Hello, everyone I made a wrong explanation at my last mail. So let me explain again ? I create a product form Web management interface, and have a Python script to call ZSQL Method in the methods folder.Two ZSQL Methods are exactly the same, only have different id My Python Script ## Script (Python) "update_to_db" ##bind container=container ##bind context=context ##bind namespace=_ ##bind script=script ##bind subpath=traverse_subpath ##parameters= ##title= ## print script.sql_Up # or I change to print script.sql_Update return printed #MY ZSQL Method sql_Update UPDATE tt_hold_ar SET ar_head='Permission' WHERE ar_id='0000114415' #ZSQL Method sql_Up UPDATE tt_hold_ar SET ar_head='Permission' WHERE ar_id='0000114415' I print two same ZSQL Method out, one is <SQL instance at 8b7f2b0>, another is <!-- Traceback (innermost last): File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/lib/zope/lib/python/Zope/__init__.py, line 158, in zpublisher_exception_hook (Object: 0000114424) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: update_to_db) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: update_to_db) File /usr/lib/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 252, in __call__ (Object: update_to_db) File /usr/lib/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 283, in _bindAndExec (Object: update_to_db) File /usr/lib/zope/lib/python/Products/PythonScripts/PythonScript.py, line 291, in _exec (Object: update_to_db) (Info: ({'script': <PythonScript instance at 8bad1c0>, 'context': <TTNews instance at 8d86ae0>, 'container': <TTNews instance at 8d86ae0>, '_': <TemplateDict object at 0x88f5c98>, 'traverse_subpath': []}, (), {}, None)) File Script (Python), line 15, in update_to_db AttributeError: (see above) --> Could anybody know why? Thanks a lot, < instance="" at="" 8cd88a0=""> Terry