Suma de celdas en excel

Hi @mively

Can you try this

sum_Vencidos = DT.AsEnumerable().
            Where(Function(row) Not String.IsNullOrWhiteSpace(row("Vencidos").ToString())).
            Sum(Function(row) Convert.ToDouble(row("Vencidos").ToString().Replace(".","").Replace(",", ".")))

Use Write Cell activity and give below

DT.Rows.Count+1

Regards,