Troubles with Loops in Dwoo Parser

[eluser]Clooner[/eluser]
I'm using phil's dwoo library and initial testing seems to be working fine. However I run intro trouble when I start using the loop function. Here is my code

Code:

{$myurl}
{loop $products title id}
<h1>{$title}</h1>
<a href="{$myurl}">Link</a>
{/loop}

The first $myurl get's loaded just fine but whenever I use the $myurl inside the loop I get an error saying it doesn't exist? This is my first time working with any template system so I might be doing it wrong but the dwoo documentation was not really helpful since it only has a real basic example on how to use loops. Hopefully someone here can explain me how to get the $myurl working inside the loop.