This can usually be done with the right commands, or if you have XmlSpawner installed, you can use [XmlFind - which is an extremely advanced interface designed to do what you want.
I usually try to add features to VNc that haven't been done, or if they have, can be improved upon. In this case, XmlFind is more advanced than anything.
Of course, if you don't have or want to use XmlSpawner, I'll see what I can do about adding this feature, no problem! (I'm not great at gump design, which is why I don't often do it)