about advance filter

[Guest]

Perhaps you might want to check out
Debra's nice coverage on the subject at her:

http://www.contextures.com/xladvfilter01.html
http://www.contextures.com/xladvfilter02.html

 

[hassan barjini]

hi
I have many problem about advance filter,
sometime answering . sometime not ??
I wonder why ?
please help me .
best