Can't Get Security Filters to Work

I've added in a Security Filter to my Report Model as documented by Bob
here:
http://blogs.msdn.com/bobmeyers/pages/Implementing-Data-Security-in-a-Report-Model.aspx
But I'm still seeing all data in report runs - what am I doing wrong?
Any other switches or settings I need? Do I need to turn on 'individual
model item' security in Management Studio? I did try that but didn't see
any difference.
ThanksI figured out my problem: I forgot to add the filter to the Security Filters
collection.
Works now.
Thanks.