Thanks for the reply!
I'm just not sure what you mean by selecting the area?
To clarify: I want to change to tabs in a dialog box similar to the picture below but so that they are not all grey. Where would the area be you are referring to?
Not the dialogs themselves.
You might be able to build an HTML-page and use that to interact with the model (SimTalk: openHTMLWindow). But then you probably miss some of the other functionalities of the Dialog object that you are looking for.