is it possible to set a group’s label dynamically using expressions? What I want to achieve is to modify the values shown within the item dividers which are part of the generated locations ui. I tried to use an expression directly within the item view of the group, but unfortunately the system interprets it as String literal.
You can modify Item labels in server-side rules using undocumented myItem.label = "bananas"
There is no guarantee when any given UI will pick up an updated version.
That was about server-side, changing the label of the actual Item.
If you want to show a bit of text on the UI and use code to decide if the text is derived or modified from the label, you should be able to do that in a custom widget.
Me neither, but you can’t change the Item label from the UI. That’s okay, you just want to show a bit of text, and maybe base it on the Item label.
So you’d want to find out how to display arbitrary text. Then you can code to edit that text.