Still struggling with this. My temporary fix is to have the game check for any of the existing light armors in the game, but if people mod in more then the encounter won't count them.

Anyone have any ideas?

Can a condition task check for the presence of a trait? The different weights of armour have associated traits - a modder might choose not to use them but that's more their issue than yours.

Failing that there are guidelines for what an armour's defence value should be based on weight. You could interrogate the defence value and split them that way - but the algorithm would sometimes get it wrong if the armour has been upgraded (for example in the strength challenge). I guess it depends on why you want the variable - if you want to know how well protected the player is it'll go fine, but if you're trying to work out how fast the player can move for a timed trap challenge that's less useful.

Encounter "RicketyBridge" has a junction with "Has Equipment of Type" conditions, but unfortunately this won't let you get specific cards from inventory.

We don't seem to have that condition currently.

That's unfortunate. What I'm trying to do is set up an encounter where the player can trade light armor for other things. Looks like my temporary fix is the way to go for now.