Excel Template

Hi all,

1- I want using Excel Template in my Abap program. How can I send data to Excel Template in my Abap program?

2- I am creating values dynamically in my program. How can I modify my Excel template for formulas? An example

a b c d e ... (dynamic fields)

1 =a2/c 2 =c2/e 1 ...

2 ....

3 ....

=Sum(a2-an)....