TDBAdvGrid does not do custom sort

VCL TMS VCL UI Pack
1

Version of TDBAdvGrid is 2.3.0.3

When you define custom sort for the grid, it calls de function OnCustomCompare but allways send the first string str1 as null.
 
¿Any ideas?
 
Thanks.
2

Ok. PageMode=true was the problem. 

 
setting to false solves the issue but Why it calls OnCustomCompare with str1 as null, but not str2?
 
Best Regards. 
3

I'd need to know what data is in the grid.  Do you mean an empty string instead of a null?