combine two sapscript outputs into a single spool

Hi,

it would be a neat way of solving a print issue if the output (via sapscripts) could be combined from two print programs.

The two print programs in question are z copies of the delivery note print program and the tranfer order print program. I have taken copies of each and now call the copy of TO print program from the delivery note print program. Can anyone advise what determines when a new spool is created?

The 'newid' param from structure ITCPO which is passed when doing an open-form does not seem to make any difference in this scenario.

thanks