I need to Create a dynamic form

Hi KrankyMarx, Did you have any progress in this issue. I'm trying to do almost the same thing. I ended up with some progress but it's half way and for complex pdfs will be headache.

What I did is for each section (to show/hide) I created a Template and added these templates into base pdf file in hidden mode. Then based on the selected checkbox, I hide/show templates. 

The headache part is (as you mentioned) when show/hide templates (sections) I need to calculate the top margin of the the elements (like textboxes, checkboxes, buttons, ...) below that section and move them down or up. (knowing what is the height of each template).

if the top margin is more than height of a page, I create a new page and put them in the new page. This is quite lots of lines of javascript but it works in Acrobat Pro veriosn.

However, frustratedly, in Adobe Reader deleting a page is not permitted so it doesn't work properly when user de-selects all checkboxes. (cannot delete extra page)

I feel this is not a right way of doing this but couldn't find any other way so far. I would consider LifeCycle which I don't khow too much about it.

If you have any advice, please update here.

Adobe Acrobat can't create dynamic forms.