SAP Script: Display Total calculated on page 2 in page 1

Hi,

In my Layout set there are two pages,

Page 1 is a cover letter & Page 2 displays the actual

data. Both pages are supposed to carry the total.

The total can be calculated only on page 2 as the line items are printed on page 2.

Added limitiation is that the steering program is a std program & the total calculation is custom & very specific to this layout.

How could this be accomplished ?.

Regards,

Jeron