I am having a problem with a form that has check boxes on it. If several checkboxes are checked it works great. If only one is checked then it gives the following error: Traceback (innermost last): File lib/python/OFS/DTMLMethod.py, line 151, in __call__ (Object: editmanystatus.dtml) File lib/python/DocumentTemplate/DT_String.py, line 513, in __call__ (Object: editmanystatus.dtml) File lib/python/DocumentTemplate/DT_In.py, line 628, in renderwob (Object: nums) InError: Strings are not allowed as input to the in tag. I can see that it is because instead of a list it now has a single string but I don't know how to handle this. Is there a way to force an object to be a list whether it is a list or a single string? Or, do I have to test for this as a special case? Right now I have: <!--#in nums--> <!--#call "REQUEST.set('num',_['sequence-item'])"--> <!--#call editstatus--> <!--#/in--> where nums is a check box input from my form. Phil A