ALV EXCEL custom template

Hi all SDNs,

I'm trying to do the following:

in a report I use FM REUSE_ALV_GRID_DISPLAY to display a table with char and numeric fields like this:

aaa 12 4 33%

bbb 20 5 25%

As you can see there is a column with percentage value. I want to summarize all the column but (obviously) the percentage column reach an incorrect value.

I try with excel custom template including a bit of VB to create the total line but I don't know where to put my code in the excel template.

Can u help me?

Thanks

Stefano