Trouble with system vars

[eluser]jedd[/eluser]
[quote author="The Beginner" date="1254085721"]
Thanks for the helpful information. I tried the template and it worked great when I created the simple about view shown in the instructions. When i tried a view that needed data passed to it I got the same error I had before, $header_logo not defined.
[/quote]

Show the code sections for:
o controller, where you set your header_logo variable,
o controller, where you call the view,
o view, where you use the header_logo variable.