HABPanel - Button dashboard-link, change icon to value

I have made a “link button” which links me into a new dashboard that shows the status “open / close” on each window throughout the house. I have a channel that is “open” when one of the windows is open and “closed” when all the windows are closed. I would like to show a particular icon on the “dashboard link button” when the channel is open and another icon when the channel is closed. But I can not make it change icon. ONLY add a text that changes between open / closed.
Could it be done in a way, or can you only see value via text?