Print Always a number of Even Pages

Hi All,

i have done a Forms with just one Master Page and a Body Page.

According the amount of data it can show even or odd pages.

If the last page is odd, I want print one page more in order to have always even pages... i tried to work with Pagination and Placement

but also i put at the end of the body page a subform placed in a next page and put a javascript in it

if( xfa.layout.page(this) % 2 !== 0){  this.presence = "hidden"; }

but seems it is not able to retrieve the number of page

Do you have some suggestions?

Thanks a lot

Massimo