DW cannot hidden widgets

I have a blogroll widget that I want hidden some ads in pages
So I set DW like the photo below
https://lh3.googleusercontent.com/-dic3GEr6Hgg/UunLp6u0R2I/AAAAAAABS4w/7XT1DXXekFw/w470-h626-no/dw+page.jpg”>Photo

But it seems doesn’t work at all
Is there setting I missed?

Here is my blogroll
http://www.enterpr1se.info/blogroll/

http://wordpress.org/plugins/dynamic-widgets/