Adding caption to UI builder generated dialog box

Hi,

I want to add a caption to the dialog box (parameter window) generated using a UI builder.

I am looking for code similar to what I would do in case of legacy reports to add a caption to the dialog box

Dialog dlg = new Dialog("@labelID");

I tried to add a caption in by overriding the new method of UI builder class, passing a dialog box with the caption to the super method, but that did not workout.

Any help is appreciated.