there was a bug in most plugins : when a value is sent to the template, we often...

there was a bug in most plugins : when a value is sent to the template, we often use "$X" => 1 to select a value in a list.
That was coded "$X" => $X
when $X=0 or ' ', that meaned $X set to 0, thus not selected.

reported a long time ago, but i never take time to fix it.