Smartforms - Identify the page just before the last page

Hi,

I need to add OMR code into a Smartforms, I print my form in duplex mode, and my OMR code must be only in the odd page (1, 3, 5, 7 ...).

In the OMR code, I must set the end of the grouping, this end occurs at the last odd page. But if the last page is pair (2 4 6 8 ...), I need to the the ending code to the page just before the end.

So, I need to identify the page just before the last page.

My problem is, when I debug the Smartforms, the SFSY-FORMPAGES contains the actual page, not the value of the last page.

if someone have an idea ..

Fred