Block sites by list using Layer7 Protocol

Hello,
I have a UIAS RB2011 and would like to know if it is possible to block websites using a single list of blocked sites in the Layer7 Protocol?
Example:

List Name: Sites_Blocked
Within this list I would type the sites that I want to block.

example:

Facebook
youtube
orkut

I did this, but it only blocks the first one on the list, in this case fabook

Thanks for the help.

Primo:
Check this: https://wiki.mikrotik.com/wiki/Manual:IP/Firewall/L7

Secundo:
Search the forum … eg. http://forum.mikrotik.com/t/layer-7-facebook-block/65021/1

Sorry I did not quite understand, I’m new to Mikrotik and if possible could I show some graphical screen of those rules in the firewall?

Use Firewall Address List to drop traffic, not layer 7

http://forum.mikrotik.com/t/layer-7-facebook-block/65021/30