[xwiki-devs] PropertyClass questions

Hi, me again :) Firstly, thank you for your help so far - it is hugely appreciated. On to the question: I searched xwiki.org for PropertyClass and found only release notes. I'm looking for a way to determine if a value has been entered into a text field, so that I can omit the entire section from the sheet if it's empty. First I guessed that there would be a length() property on a string, but was unsuccessful. Then I guessed from the VTL Reference & User Guide that I might be able to use size(), if a string was actually a char[], but was disappointed. Any clues? Thanks again, - Hugh