Sorting Issue Based On two columns

[#1]

Hello Guys,

I need to sort data in qlikview. First sort by the date column descending , then in every date I have to sort internally the negative values also  descending

example:

  1  -12 13/7

   2   -7  12/7

   3 -6   12/7

   4  -3   12/7 

should be after sort :

1    -12 13/7

2     -3  12/7

3     -6 12/7

4     -7  12/7

I want to write it in the expression tab.

Anyone can help?

Thanks,

Oded