Sorting TadvStringgrid

There has been a change in how a TAdvStringgrid is sorted and I can't find out how to get the grid to sort correctly. I have enabled normal sorting in most of my grids where you click on the header and then the grid is sorted (it has been like this in my progs for almost 10 years), but now the grids sorts like this:
1
10
2
3
4
5
6
7
8
9
I want of course the grid to be sorted in the normal way, from the highest to the lowest value or the oppsite. I'm pretty sure there is a simple solution, but I can't find it and I don't have much time before a major release.
Thanks in advance.

Problem solved, I updated from TMS Component Pack 7.9.0.1 to 7.9.1.0, the sorting is now ok :)