How do I use a Barter Stand?

[Gauteamus]

I fear this is going into the bug forum in a short while, but I figured I could try here first, as I discovered that I do not have the UI for Barter Stands internalized.

I built a barter stand. Putting items for sale into the slots works perfectly, but the troubles start when I want to choose the item I want as price.
Clicking "Change" brings up a "lift-cursor", but clicking with this cursor on an item in inventory has no effect.

Does anyone remember the exact protocol to get a barter Stand working?

I fear this is a bug, and that it is not working as intended.
We seemed to experience alot of crashes while using the stand.

[TeckXKnight]

From what I remember, you can't try to sell items for similar items. So you can't trade iron ore for copper ore, for example. See if it accepts entirely different items, such as Carrots for a Bucket of Water.