We're considering changing our process a little bit so that rather than testers marking stories unfixed, they instead log Bug's (a different card type) against the given stories. Bug's always show up on the development wall along with tasks, whereas stories don't.
What I'd like to have happen is add a URL to the default story card description area, that creates a new Bug card, adding THIS CARD as the parent in the iteration card tree. My initial attempts have failed though, and I was wondering if I'm doing this wrong. The URL that I'm trying to use is below:
project/cards/new?properties[Type]=Bug&properties[Story]=(THIS CARD)">New urgent bug</a>