Hi all, Let me state what I'm trying to do, then the problem I've run into with my solution. I have a series of HTML option inputs, all with the same name and a unique value: <input type="checkbox" name="removeLine" value="6"> <input type="checkbox" name="removeLine" value="7"> <input type="checkbox" name="removeLine" value="8"> In the DTML method that processes the form, if a single check box on the form was selected, I get a string with the value, eg. removeID = '4'. If more than one is checked, I get a list: ['32', '34', '50'] The dtml-in tag chokes if passed a string, but works fine for the list. So, my solution was to test for the type of removeID before using dtml-in: <dtml-if "type(removeID) is types.StringType"> treat as string <dtml-else> treat as list </dtml-if> 1) This does not work; I get a NameError on 'type'. How do I reference built-in functions? The documentation does not mention type() as existing on the _ variable, and indeed, "_.type(removeID)" does not work either. 2) Is there a more elegant way to solve this problem than checking the type? Thanks, -scott