[peddler]

I can't say for certain, but first glance makes me wonder if your "{if $v.value eq $o}" code is trying to set both radio buttons to checked status?

If so, that's the reason for non-display. Using Name and ID can have strange effects as well, depending upon whether the variables change or stay the same. You want the same name for more than one radio button, if you want to force a choice between the buttons.

Without knowing the variables involved, it's difficult to diagnose, at least for me. Maybe you could look at the page's source code and get a better idea of what the variables end up resolving to, alphanumerically.

hth