[Zope] DTML-IN not using SIZE parameter in HDML coding.

I'm working on an HDML page to displayed on a WAP-enabled phone. Its all done in Zope. The application works great. It asks you for part of a company name to search for, submits and queries a database and returns a list of company names that match. However, it seems to be ignoring the size parameter of the dtml-in tag. So long at the list is fewer than 10 it works fine. If over that, the phone can't handle the display of the page and throws an error. Not a Zope error but one from the phone. Any idea why size would not work with HDML? Thanks Allen