hiding pages in livecycle

Hi

I Have 4 pages namely Page1,Page2,blank_page,Page4

There is a text field in Page2. When type a number in the text field lets say "2" the respective page will duplicate 2 times.

When we print the document, both side of the paper should get printed then the blank page should duplicate when the number of pages become even number.

I have use presence property of the page. and following previous binding property. I am getting an empty white page when i use presence as hidden.

Please help me why am i getting a empty white page when deleting?

Regards,

Maleen