Hi Experts, a question about main window of smartform? thank you

Hi Experts,

I have a smartform and it has one page called 'first_page', the next page is itself, the page has two nodes, one is item title(in secondary window), another is item detail(in main window), and for the item title the height of the window is not fixed because if some condition occurs the height should be 1.5cm, or else it should be 1cm and and the space between main window and the secondary window must be 0, for example, the upper margin of the secondary window is 1cm and the height is 1cm, so the upper margin of the main window is 2cm and height is 25cm, what I have done is creating a empty text in the main window to make a 0.5cm height space if the secondary window is 1.5cm, but I met a problem, the empty text in the window can only be processed on first page, so can anyone tell me how can I make the empty text processed on the next pages?

Kind regards

Dawson