Dynamic label for a group created in paperui

I was looking for something similar, I have a sitemap that looks something like this:

sitemap default label="My House"
        Frame {
                Group item=floorGround
                Group item=floorFirst

I then created a new Group through PaperUI “Master Bedroom” where I would like to add the temperature to the label.
I saw in another post about adding [%s] to the label and then connect it to an item (the thermometer in the room) but I cant seem to find how to do this in paper ui.
Will I have to create the group in items and not through PaperUI?


PaperUI -> Configuration -> Items, then add it to the label definition:

Thanks, what would the rule to set the group label look like?