Dock modifications in terminal are not working

Hi, I am trying to make several dock modifications using terminal commands, but none of them will work. No error messages pop up, and I am restarting the dock each time I try. All of the other terminal commands work, including modifications to the finder. Any suggestions?

What dock modifications are you trying to do? And what version of OS X are you running?

I am running OS 10.6.8 (Snow Leopard). I am trying to activate the new view option for stacks and enable iTunes track notifications. Both are listed here: 5 Ways to Customize the Dock with Terminal | Mac|Life
-Thanks

Did you restart the dock after trying the commands?

Yes, I did

My only other suggestion would be that these may be for Lion, and not Snow Leopard since the article was written in January of this year.