Category : problem

I have :
– a page “A”
– an article width category “1”

On a widget i do :
“display widget on selected” : A / 1

problem:
Widget is displayed on page “A”
but not on the article with category “1”

(the same thing for all widget : on pages it’s OK, but on article with a category the widget is not displayed)

AND :
If, instead of “display widget on selected”, I choose “hide widget on selected” : the widget on page A is hide, but on the article with category A it’s displayed !!!